OffsuitA hold'em starting hand with two cards of different suits.
One paira hand containing one pair of cards of the same value, irrespective of suit
One-GapA hold'em starting hand with two cards two apart in rank. Examples: J9s, 64.
Open-Ended Straight DrawSeeking one of two card values to make a straight. For instance, a player holding 9-8 with a board of 2-7-6 can make a straight with either a ten…
OutA card that will make your hand win. Normally heard in the plural. Example: "Any spade will make my flush, so I have nine outs."
OutrunTo beat. Example: "Susie outran my set when her flush card hit on the river."
OvercallTo call a bet after one or more others players have already called.
OvercardA card higher than any card on the board. For instance, if you have AQ and the flop comes J-7-3, you don't have a pair, but you have two overcards.
OverpairA pocket pair higher than any card on the flop. If you have QQ and the flop comes J-8-3, you have an overpair.