Offsuit: Hole cards that do not have matching suits.
Out: A card that can improve a hand which is not currently the
best to being the best hand.
Out of position: Having to act first during a hand.
Outkicked: Having the same pair as your opponent but losing
because your kicker is a smaller ranked card than theirs.
Overbet: Betting larger than the pot.
Overcard: A card higher than any card on the flop, or a card
higher than either of your hole cards.
Overpair: A pocket pair that is higher than any card on the flop.
Pocket pair: Having a pair as your two hole cards.
Pot Odds: The odds being offered to you by the pot compared to
what you must call to continue in the hand.
Postflop: Refers to the play in a hand just after the flop is dealt.
It includes play on the flop, turn and river.
Pot: The money already wagered and in the middle of the table.
It’s also used to refer to a hand. "There were four people in the
pot." means there were four people playing the hand. This can
also be used as a verb. "I potted the turn." means that player bet
the size of the pot on the turn.
Pot-Size Raise: Raising an amount that offers your opponent 2:1
Preflop: Refers to the point in the hand after the hole cards have
been dealt but before the flop has been dealt.
Push: Wager your entire stack by going all-in.