Jackpot

A big win on a slot machine.

"Jackpot!!! Looks like I hit the big one!"

Jacks Or Better

In video poker games, the payout starts at a certain level ranking of hands. When playing Jacks or Better, if you get a pair of Jacks or a higher ranking, you win. You don't win anything on a pair of tens or lower.

"Jacks or Better is one of the most popular video poker games around."

Junket

An organized group of people that travel to casinos to gamble together. In some cases these players may be subsidized by another casino.

"Our Junket travelled to Las Vegas to play at the Bellagio."