Kamikaze: Either in reference to a player who throws away his money in disregard of the odds, or the starting hand of K-K.

Keep ’em honest: Calling down to the showdown to prevent someone from bluffing (and/or getting a glimpse into the style of play of a certain player).

Kicker: The highest unpaired side card in a players’ hand. Used as a tie-breaker where applicable.

Kill: The person who wins one/two pots in a row must post big blind as well.

Kojak: Starting hand of K-J

Knock: To check. Often used in live play instead of saying “check”.