Gambling Dictionary

Rack - A box to hold chips or checks.
Raise - In poker, a player raises by matching the previous bet and then betting more, in order to increase the stake for remaining players.
Rake - The money that the casino charges for each hand of poker. It is usually a percentage or flat fee that is taken from the pot after each round of betting.
Rank - The value of a set of cards.
Rap - To cast disparaging remarks about someone. Usually done behind his or her back.
Red - The most common color used for $5 chips.
Red-Black Bet - In Roulette, an outside wager on whether the next spin will be a red or a black number. This bet is played off at even money.
Reel - The spinning area on the slot machines displaying the various symbols.
Renege - Definition 1: To refuse to honor a lost wager or debt. Definition 2: To misplay a card illegally.
RFB - High rollers are comped with free room, food, and beverage.
Riffling - Card shuffling technique.
Right Bettor - A person betting on the Pass Line.
Ring Game - A regular poker game rather than a tournament. May be referred to as a live game because actual money is used rather than chips.
River - In poker, the final card dealt in a hand of stud or hold 'em. In 7 card stud, staying in until the fifth and final round of betting is called going to the river.
RNG - the random number generator, which is a computer chip inside a slot machine. It is constantly generating thousands of numbers every second.
Round Robin - A bet of 3 teams or more.
Royal Flush - In Poker, an ace-high straight flush which is the best possible hand.
Rush - A streak of winning many consecutive hands in Poker.