Accumulator
A single bet made up of several selections where every leg must win. The odds multiply together, so returns grow quickly but the strike rate falls. Called a parlay in the US.
Learn the most important gambling terms, casino terminology and betting definitions. Our gambling glossary explains everything from bonuses and RTP to wagering requirements in simple language.
A single bet made up of several selections where every leg must win. The odds multiply together, so returns grow quickly but the strike rate falls. Called a parlay in the US.
In horse racing, backing one runner to win, place and show at the same time. Effectively three equal bets on one ticket.
Money in play. Can mean a player's total wagering across a session, or how much betting volume a market is attracting.
In poker, anyone still holding cards and involved in the current hand.
An optional chip purchase in a poker tournament, normally offered at the end of the rebuy period and open to every player regardless of stack size.
Betting on the handicap rather than the outright winner. A team's ATS record tracks how often it beat the spread, not how often it won.
The ceiling on what a casino will pay out across a single game or event.
The combined total of everything a player has won over a defined period.
A poker style built on frequent betting and raising rather than calling and waiting.
Committing every remaining chip to one hand. You can win only up to the amount you put in, but you cannot be forced out of the pot.
A keno ticket that pays only if every number you picked is drawn, or if none of them is.
Odds shown with a plus or minus sign. A minus number is the stake needed to win 100; a plus number is the profit on a stake of 100. Also called moneyline odds.
The 38-pocket wheel carrying both a zero and a double zero. House edge 5.26%, roughly double the European version.
A compulsory bet every player puts in before cards are dealt, so there is always something in the pot to play for.
A bet struck well ahead of the event. Prices are bigger, but the stake is usually lost if your selection does not take part.
A one-roll craps bet that the next throw lands 2, 3 or 12. Pays 7 to 1 and carries a high house edge.
Covering every outcome of an event across different bookmakers at prices that guarantee a profit whatever happens. Also called arbing or sure betting.
See Automat Club.
A craps player believed to be able to influence the dice with a controlled throw. Casinos counter the idea by requiring every throw to hit the back wall.
Football handicap betting in quarter- and half-goal increments that removes the draw, so every bet settles as a win or a loss with no push.
A venue filled with automated machines and no table staff. Also called a slot hall, videomat casino or arcade casino.
A slot setting that spins a chosen number of times automatically, usually with optional loss and win stops.
Card game where you back the Player hand, the Banker hand or a tie. Drawing follows fixed rules and no decisions are made after the bet. Banker carries the lowest edge at around 1.06%.
A late, meaningless score that flips the point spread result without changing who won the game.
Losing from a position where you were a heavy favourite, usually through an unlikely turn of events.
In baccarat, one of the two hands dealt. In sports betting, a selection treated as near certain and used as the anchor of an accumulator.
Money set aside specifically for gambling and kept separate from everything else.
Deciding in advance what share of that money goes on any one bet or session, so a losing run does not wipe you out.
A dispute between a player and the house over the outcome or settlement of a bet.
An early winning run by an inexperienced player. It has no statistical basis.
A single instance of risking money on an outcome.
A sportsbook feature for combining several markets from the same match into one bet.
A platform where players bet against each other rather than against a bookmaker. One side backs an outcome, another lays it, and the operator takes commission on winnings.
The smallest and largest amount accepted on a given game or market.
One cycle of betting in which each player in turn can bet, call, raise, check or fold.
The larger of the two forced bets in poker, posted two seats left of the button, and normally the minimum opening bet for the round.
Nevada's list of individuals formally barred from entering licensed casinos.
A chip worth 100 in most American casinos.
Table game where you try to finish closer to 21 than the dealer without going over. Also the name of an ace plus a ten-value card, usually paid at 3 to 2.
A forced bet posted before any cards are dealt. Blinds rotate around the table so every player contributes.
Betting or raising a weak hand to represent a strong one and force better hands to fold.
The community cards face up on the table in games such as Hold'em and Omaha.
Promotional funds, spins or free bets offered by an operator, almost always tied to wagering conditions.
Using promotions in ways the operator treats as outside the spirit of the offer. Can cost you the bonus, the winnings or the account.
A string entered at registration or deposit to unlock a specific offer.
A person or company that prices events and accepts bets on them. Also called a bookie or sportsbook.
Craps slang for rolling a total of twelve, two sixes. Also called midnight.
The joker, used as a limited wild card in some games.
A card removed face down before dealing, used to protect the integrity of the deal if anyone has glimpsed the top card.
Going over 21 in blackjack, which loses immediately regardless of what the dealer holds.
The cash exchanged for chips before joining a table, or the entry fee for a tournament.
Paying worse odds in exchange for moving a spread or total in your favour, for example shifting -7 to -6.5.
The cashier's window where chips are bought and redeemed.
Matching the current bet to stay in the hand without raising.
A 26-bet combination on five selections, made up of doubles, trebles, four-folds and one five-fold. Also called a Super Yankee.
Tracking the ratio of high to low cards left in the shoe to judge when the deck favours the player. Not illegal, but casinos will bar anyone doing it.
A strong, experienced card player. Note that the near-identical 'card sharp' implies cheating.
American slang for an upmarket casino. The opposite of a sawdust joint.
A promotion returning a share of losses over a set period, paid either as cash or as bonus funds.
Settling a bet before the event finishes, at a price the book offers based on the current state of play. Lets you lock in a profit or cut a loss early.
Another name for the house edge.
The favourite. Backing chalk means siding with the expected winner at short odds.
Raising stakes or extending a session to win back what has already gone. One of the clearest warning signs of a gambling problem.
Declining to bet when nobody has bet before you, keeping your hand alive at no cost.
Tokens standing in for cash at the tables, colour-coded by denomination.
A market with reduced limits, usually because of injury, weather or other unresolved uncertainty.
The final price before an event starts. Consistently beating it is the standard measure of long-term betting skill.
A player or machine on a losing run. Past results say nothing about the next one.
In poker, calling a bet and a raise in one action without having put money in that round.
A table where most of the players are consistently losing.
A roulette bet on one of the three columns of twelve numbers, paying 2 to 1.
A craps bet placed after the point is set, working like a fresh Pass Line bet from the next roll.
A fee taken on winnings. Standard at 5% on banker wins in baccarat and charged on net winnings at betting exchanges.
Something given free by the casino based on how much you play: meals, rooms, tickets or play credit.
Having a meal, room or play credit covered by the casino on the strength of your play.
Loyalty points earned through play and exchangeable for bonus funds, free spins or other rewards.
A roulette bet on four numbers meeting at one intersection, paying 8 to 1. Also called a square or quarter bet.
Beating the point spread, not merely winning the game.
Dice game with dozens of betting options. Pass Line and Don't Pass carry the lowest house edge on the table.
The dealer at a table game. French in origin and most often used for roulette and baccarat.
A staking system that raises the stake by one unit after a loss and lowers it by one after a win.
A tie for a finishing position. The stake is divided by the number of runners involved and each part settled at full odds.
The employee who deals the cards and runs the game. In poker the dealer position also rotates to set the betting order.
The disc marking who is nominally dealing in poker. It moves one seat clockwise after each hand.
Odds as a single number. Stake multiplied by the number gives the total return including the stake. Standard in Europe, Canada and Australia.
Extra funds matching a percentage of what you pay in, subject to wagering requirements.
A two, whether on a card or a die.
Betting slang for a wager of 1,000.
The tray beside the dealer holding cards already played.
The marker placed over the winning number at an American roulette table.
A craps bet made after the point is set, effectively betting against the shooter from the next roll.
A craps bet made before the come-out roll, betting against the shooter. Carries a slightly lower house edge than the Pass Line.
An accumulator with exactly two legs. Both must win.
Doubling your blackjack bet after seeing your first two cards, in return for exactly one more card.
A roulette bet covering six numbers across two adjacent rows, paying 5 to 1. Also called a line bet.
A roulette bet on one of three blocks of twelve numbers, paying 2 to 1.
Taking replacement cards in poker, or a tied result in sports betting.
Odds lengthening on a selection, usually a sign that support is weakening or that new information has emerged.
The total cash and chips taken at a table over a shift.
The locked box beneath the table into which that money goes.
A bet split in two: half on the selection to win, half on it to place at reduced odds. Common in racing and golf.
An independent testing and certification body for online gaming fairness and player protection.
Any advantage held by one side. The house edge belongs to the casino; a skilled bettor can hold one of their own.
A French roulette rule that holds an even-money bet for one more spin when zero lands, rather than losing it outright.
The 37-pocket single-zero wheel. House edge 2.70%, around half that of the American version.
A price that returns the same profit as the stake: 1/1 fractional, 2.00 decimal or +100 American.
Anything beyond a straight win or lose, such as forecasts, tricasts and prop markets.
The average result per bet if the same bet were repeated indefinitely. Positive EV is profitable over the long run, negative EV is not.
How much a bookmaker stands to lose on one outcome, or a bettor's total risk across all open bets.
The ceiling-mounted surveillance system watching the casino floor.
Jack, queen or king. Worth ten in blackjack and nothing in baccarat. Also called paint.
Betting against a particular team, tipster or the betting public.
The outcome judged most likely, carrying the shorter price and the smaller payout.
The device used to sort and separate coloured roulette chips.
The final community card in Texas Hold'em. Also called the river.
The card that completes a made hand in poker. Also used for replenishing a table's chip tray.
A French roulette call covering the numbers made of a repeated digit: 11, 22 and 33.
A wager settled on the first half alone, independent of the final result.
An inexperienced or losing player, most often said of poker. The opposite of a shark.
Odds locked in at the moment the bet is placed, whatever happens to the market afterwards.
Staking the same amount every time regardless of confidence or recent results. The most conservative staking approach.
A player who expects comps and favours while betting almost nothing.
The first three community cards, dealt face up together in Hold'em and Omaha.
Five cards of one suit in any order. Beats a straight, loses to a full house.
Giving up your hand and everything already committed to the pot.
Picking first and second in the correct order in racing. A reverse forecast covers both orders at double the stake.
Odds written as a fraction: the first number is the profit, the second the stake. Traditional in the UK and Ireland.
A promotional stake put up by the operator. Winnings are usually paid without the stake returned.
A tournament with no entry fee but a real prize pool, used to attract new players.
Slot spins that cost nothing, awarded as a promotion or triggered in game by landing specific symbols.
Single-zero roulette with the La Partage and En Prison rules, cutting the edge on even-money bets to 1.35%.
Three of a kind plus a pair. Beats a flush, loses to four of a kind.
A bet on something decided later, such as an outright champion before a season starts.
The false belief that past results change future odds in a game of chance. Ten reds in a row do not make black any more likely.
Staking something of value on an outcome that is uncertain.
Dealer slang for a generous tipper.
An over/under on the combined score of every game on a given day in one sport, most common in hockey and baseball.
Slang for a bribe.
Playing long sessions at small stakes for slow, steady returns rather than big wins.
Total wagers minus total winnings paid out. The headline measure of operator revenue before costs.
A bet on the second half only, priced on the state of the game at the interval.
The cards held by a player, or a single round of play in a card game.
Points, goals or strokes given to the weaker side to level out a market.
The total amount wagered on an event or over a period. Not the same as what the operator keeps.
A blackjack hand containing no ace, or one where the ace must count as 1. A hard 16 has no flexibility left.
A craps bet that an even number arrives as a pair before a 7 or before the same total in any other combination.
Betting the other side of a position you already hold, to lock in a return or cut risk.
A player who consistently stakes large amounts and is treated accordingly.
Asking the dealer for another card in blackjack.
The share of money wagered that the operator actually keeps. Based on real results rather than theoretical averages.
A card dealt face down and hidden from other players.
Slang for the half point on a spread. It removes the possibility of a push.
A player or machine on a winning run. Describes the past and predicts nothing.
A run of wins, usually said at the poker or blackjack table.
The casino or operator.
The built-in mathematical advantage held by the operator, expressed as a percentage of everything staked. A 2% edge means the house expects to keep 2 of every 100 wagered.
Rules that vary between venues, and sometimes between tables in the same venue.
A conditional wager where the second leg is only placed if the first one wins.
Betting on an event already under way, with prices moving in real time. Also called live betting.
A roulette bet placed on the numbered grid itself. Bigger payouts, lower probability.
A blackjack side bet offered when the dealer shows an ace, paying 2 to 1 if they have blackjack. Mathematically a poor bet in most situations.
Play designed purely to clear a bonus at minimum risk, which operators treat as bonus abuse.
Interactive Video Terminal.
The top prize in a game. Fixed jackpots pay a set amount; progressive ones grow until won.
The bookmaker's cut built into the price. Also called vig or margin. Standard juice on a spread is -110 each side.
An organised casino trip with travel and accommodation subsidised in exchange for a commitment to play.
A rummy variant played with wild cards, also known as Jamaican rummy.
A formula for sizing bets in proportion to your edge, aimed at maximising long-run bankroll growth. Only as good as your probability estimate.
A lottery-style draw game. Simple to play and carrying one of the highest house edges available.
The highest side card, used to break ties between otherwise equal hands.
The supervisor seated above a baccarat table.
A French roulette rule returning half an even-money stake when the ball lands on zero.
A bookmaker placing a bet elsewhere to reduce exposure on one side of a market.
The printed cloth on a table showing where each bet is placed.
The maximum a casino or book will accept on a game or market. Can be cut for individual accounts.
Entering a poker pot by calling the big blind rather than raising.
The odds or spread posted on an event.
A change in the posted price after a market opens, driven by volume, news or sharp money.
See In-Play Betting.
Online games run by real dealers and streamed in real time, with bets placed through a digital interface.
The person dealing cards or spinning the wheel in a streamed live casino game.
A bet someone is certain about. No bet is ever actually a lock.
A selection with a low chance of winning and a correspondingly big price.
A cap on losses over a session or period, set by the player or enforced by the operator.
Poker in which the lowest hand wins. Also called lowball.
A 15-bet combination on four selections, including singles. A consolation bonus usually applies if only one wins.
A 31-bet combination on five selections, including singles.
The bookmaker's built-in profit across a market, expressed as the amount by which implied probabilities exceed 100%. Also called overround.
A line of credit issued by a casino, repayable later.
The maximum credit a casino is willing to extend to a player.
Doubling the stake after every loss so that one win recovers everything. Table limits and finite bankrolls are why it fails in practice.
A deposit bonus matching a set percentage of what you pay in. A 100% match doubles the deposit.
The largest stake accepted on a single bet or spin.
A linked jackpot pooling contributions from every machine wired to the same network.
A slot mechanic developed by Big Time Gaming where the symbol count per reel changes each spin, producing up to 117,649 ways to win.
Winning both sides of a market by taking opposite positions at different lines and having the result fall between them.
The smallest stake a game or market will accept.
A bet on the outright winner with no handicap involved. The simplest sports bet there is.
See Accumulator.
A feature that multiplies a win by a set factor. A 5x multiplier turns a win of 10 into 50.
A bettor treated as a jinx, whose picks seem always to lose.
A two-card hand of a particular total: 21 in blackjack, 8 or 9 in baccarat, 7 or 11 on a craps come-out roll.
A bet or game designed to lose money over the long run.
Betting slang for a wager of 500.
Bonus credit given without any deposit. Usually small and carrying higher wagering requirements than a deposit offer.
Promotional chips that can be staked but not cashed in.
A roulette chip with no printed denomination. Its worth comes from the buy-in divided across the stack.
A bet on a non-sporting event such as an election, an awards show or a reality TV result.
The range a draw game selects from: 1-80 in keno, 1-75 or 1-90 in bingo, typically 1-60 in lotteries.
A player's target figure for the day. In house usage, the casino's running costs.
The expression of how likely an outcome is and what it pays. Written as decimal, fractional or American, all carrying the same information.
A price implying better than a 50% chance, returning less profit than the stake risked.
A temporary promotional price set above the standard market.
The person who sets and adjusts prices for a bookmaker. Also called a trader or oddsmaker.
A market temporarily withdrawn from betting, usually pending news such as a lineup or injury update.
Playing emotionally after a bad run, which normally makes things worse. Stepping away is the only reliable fix.
The first player to place a bet in a poker round.
The first price posted on a market, before volume and news move it.
The mathematically best set of decisions in a game where outcomes can be calculated, such as blackjack or video poker.
A bet on the winner of a whole competition rather than a single match.
A roulette bet placed outside the number grid: red/black, odd/even, dozens or columns. Lower payouts, higher strike rate.
A bet on whether a total will finish above or below a posted number. Also called a totals bet.
A price better than the true chance of the outcome, giving the bettor the edge.
The total implied probability of a market above 100%, representing the bookmaker's built-in profit.
See Face Card.
Two cards of matching rank.
See Accumulator. The standard term in the US.
A staking system that increases the stake after each win rather than after each loss.
The core craps bet, placed before the come-out roll. Wins on 7 or 11, loses on 2, 3 or 12, otherwise sets the point.
A seven-bet combination on three selections that includes singles, so one winner still returns something.
A line across the reels along which matching symbols must land to form a winning combination.
The total returned on a winning bet, stake included.
See Return to Player.
The list of payouts for each winning combination in a game. Worth checking before you play, since operators can run different versions of the same game.
A market with no favourite, where the spread is zero and you simply pick the winner.
An unsophisticated player, easily exploited by stronger opponents.
The area of the floor containing the table games.
The supervisor responsible for a group of tables, handling disputes and watching for cheating.
In craps, the number set on the come-out roll that the shooter must repeat before rolling a 7.
Australian and New Zealand term for slot machines.
The total staked by all players in a single hand of poker.
A prize that grows with every bet placed until someone wins it, then resets to a base amount. Can be linked across many games or casinos.
A slot machine attached to a progressive jackpot pool.
A bet on something within a game that does not depend on the final result, such as the first scorer or the number of corners.
The studio that develops casino games and sets their RTP, volatility and features.
Ice hockey's standard point spread, set at 1.5 goals.
The most widely dealt form of baccarat, with the house always banking and no player decisions after the bet.
A tied result where the stake is simply returned, with neither a win nor a loss.
Four of a kind in poker.
The condition that must be met for a bet or bonus to count, such as a minimum qualifying stake.
Increasing the current bet, forcing other players to match it, fold or re-raise.
The poker room's cut of each pot, normally a percentage up to a capped maximum. It is how the house profits from a game players play against each other.
The software producing unpredictable outcomes in online games. Licensed operators must have it certified by an independent testing laboratory.
The value of a card or hand relative to others.
A feature that respins one or more reels at no extra cost, often triggered by specific symbol combinations.
Buying additional chips during the designated early stage of a poker tournament.
A vertical column of symbols on a slot machine. Classic slots have three, most video slots five or more.
A deposit bonus for existing players, usually a smaller percentage than the welcome offer.
Treating gambling as entertainment and keeping control of time and money spent. Licensed operators must provide deposit limits, loss limits, session reminders, cooling-off periods and self-exclusion.
The share of all money staked that a game returns to players over the long run. A 96% RTP means a 4% house edge. It is a theoretical figure across millions of rounds, not a session forecast.
The fifth and final community card in Texas Hold'em, dealt before the last round of betting.
See Wagering Requirement.
Wheel game where a ball settles into a numbered pocket. Single-zero European and French versions give better odds than the American double-zero wheel.
A combination bet creating parlays from every possible pairing within a group of selections, so not every leg has to win to return something.
Ace, king, queen, jack and ten all in one suit. The best hand in poker and unbeatable.
An accumulator built entirely from markets within a single match. Also called a bet builder.
American slang for a plain, no-frills casino. The opposite of a carpet joint.
A slot symbol that pays or triggers a feature wherever it lands, without needing to sit on a payline.
Voluntarily barring yourself from an operator for a fixed period, during which they must block your account and stop marketing to you.
One continuous period of play.
A strong player, especially at poker, who makes money from weaker opponents.
A professional bettor whose money moves markets. Books track sharp action closely. The opposite of a square.
A small mirror used by cheats to glimpse an opponent's cards.
The box holding several decks of cards from which the dealer draws. Blackjack and baccarat typically use six or eight decks.
An optional extra wager alongside the main bet in a table game, usually carrying a much higher house edge.
A bet on one selection in one event. The simplest form of sports bet.
A reel game that pays for matching symbols across active paylines or ways. Modern versions add free spins, multipliers, bonus rounds and jackpots.
The smaller of the two forced bets in poker, posted immediately left of the button and usually half the big blind.
Craps slang for rolling two ones, a total of 2. Also called aces.
A blackjack hand counting an ace as 11, so one more card cannot bust it.
Dividing a blackjack pair into two separate hands with separate bets. In roulette, a bet on two adjacent numbers.
The handicap applied to the favourite in a points market. Betting the spread means backing the margin, not the winner.
A casual bettor who backs favourites and popular teams without deep analysis. The opposite of a sharp.
The amount of money risked on a single bet.
Declining any further cards in blackjack.
Fast, heavy line movement across several books at once, usually driven by sharp money or syndicates.
Bonus credit you can play with but never withdraw. It is stripped from the balance when you request a cash-out.
Five cards in sequence but not all of one suit.
A single wager on one outcome, with no parlays or combinations involved.
Five cards in sequence, all of one suit. Beaten only by a royal flush.
A roulette bet on a single number, paying 35 to 1. The highest payout and lowest probability on the table.
A roulette bet on a row of three consecutive numbers, paying 11 to 1.
Folding a blackjack hand before playing it out and forfeiting half the stake. Not offered at every table.
A combination covering multiple parlays within a set of selections, so a return is possible even when not every leg wins. Trixie, Yankee and Lucky 15 are all system bets.
Losing your entire bankroll and having to stop.
A parlay in which each spread or total is shifted in your favour in exchange for shorter odds. All legs must still win.
A result where neither side wins. In baccarat it is a bettable outcome in its own right.
See On Tilt.
Someone who sells or publishes betting selections. Claimed records are worth verifying independently.
A tip for the dealer, given as a chip or as a bet placed on their behalf.
A coin-like disc used in place of currency on some machines.
The combined score of both sides, bet as over or under a posted number.
A structured competition with a fixed entry and a prize pool, where players compete against each other rather than the house.
Shorthand for tournament.
A fixture where a strong side is vulnerable through complacency or a bigger match ahead.
An accumulator with exactly three legs. All three must win.
A four-bet combination on three selections with no singles. At least two must win to return anything.
The pooled tip fund shared among casino staff.
The real probability of an outcome before any margin or house edge is applied.
The fourth community card in Texas Hold'em, dealt after the flop and before the river. Also called fourth street.
The total amount wagered over a period, regardless of whether it ended in profit or loss.
The side expected to lose, priced longer as a result. Marked with a plus sign in American odds.
A price shorter than the true chance of the outcome, leaving the bettor with the worst of it.
A standard bet size expressed as a fixed percentage of bankroll, so results can be compared independently of how much money is behind them.
A bet where the price offered is bigger than the true probability justifies. Finding value consistently is what separates winning bettors from losing ones.
The natural swing between short-run results and long-run expectation. Same idea as volatility.
Machine game based on five-card draw, where you discard and replace cards and are paid according to the final hand. Jacks or Better and Deuces Wild are the common variants.
The commission a bookmaker charges for accepting a bet. Also called vig or juice.
A loyalty scheme offering faster withdrawals, higher limits, dedicated support and exclusive offers to frequent or high-value players.
Video Lottery Terminal.
How a game distributes its payouts. High volatility means rarer but larger wins; low volatility means frequent but smaller ones. Neither is better, it depends on bankroll and temperament.
A bet, or the act of placing one.
How many times a bonus must be staked before winnings can be withdrawn. A 35x requirement on 100 means 3,500 in total bets. Also called rollover or playthrough.
The dealer's open-handed gesture when leaving the table, showing they are taking nothing with them.
An extremely high-stakes player whose action materially affects a casino's results.
Old casino slang for profit.
A card that can stand in for any other card value.
A slot symbol that substitutes for others to complete winning combinations. Some also expand, stick across spins or carry multipliers.
A cap on winnings over a session, or on how much can be withdrawn from bonus play.
Moving money out of a gambling account to a bank, card or e-wallet. Processing times vary by operator and method.
Watching a blackjack game from outside and joining only when the count favours the player. Named after Stanford Wong.
An 11-bet combination on four selections with no singles. At least two must win to return anything.
The green pocket that gives roulette its house edge. European and French wheels have one, American wheels have two.
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