Four cards that can potentially make a straight, a flush or a straight flush, e.g. J1098 (open ended) or J1087 (inside).
In hold'em, the third round of betting, after the fourth community card is dealt. In seven-card stud, the second round of betting when a player is dealt their fourth card.
The video poker variant that has the best payback percentage for the player.
An ace or a face card (but not the 10) in video poker.
The button a player presses to keep, rather than discard, a card.
Four cards to a straight with a gap inside, e.g. 7543 (vs 7654, an "open ender" that has double the chance of making the straight).
A video poker game in which the player must have at least a pair of jacks to win.
A game in which the player can make five of a kind with a joker wild card and win 1000 coins.