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| Jackpot | A prize fund awarded to a player who meets a set of predetermined requirements. For example, some casinos will give a jackpot to someone who gets four-of-a-kind or higher and loses. |
| Jackpot Poker | A form of poker in which the cardroom or casino offers a jackpot to a player who has lost with a really big hand (usually Aces full or better). |
| Jacks-or-Better | A form of poker in which a player needs to have at least a pair of jacks to open the betting. |