A–Z index

Gambling terms beginning with J

7 terms under J, each with a one-line summary. Follow a term for the full explanation.

Jack of spades Card games

The jack of spades is the playing card that sits between the ten and the queen in the spade suit of a standard 52-card deck.

Jackpot lottery Lottery & bingo

A jackpot lottery is a lottery game where the top prize is a jackpot that rolls over and increases when no ticket matches the winning numbers.

Jackpot machine Slots

A jackpot machine is a reel-based gambling device, often called a slot or fruit machine, that can award a jackpot prize.

Jackpot symbols Slots

Jackpot symbols are slot-machine symbols that trigger a jackpot prize, either by landing on a payline or by forming part of a special jackpot-trigg…

Jackpot UK Online

In UK gambling, a jackpot is the top prize in a game, often a progressive jackpot that grows from a seed value as players stake money.

Jockey weights explained Racing

Jockey weights are the total assigned racing weight a horse must carry, comprising the jockey, their equipment and any lead weights needed to reach…

Joker in pai gow Card games

A joker in pai gow poker is a bug card that can fill a straight or flush in the five-card hand, but is treated as an ace if it cannot;