(informal, intransitive) To engage in an activity whose only purpose is to make the time seem to pass more quickly; to fill the time between activities.

Alternative spelling of killjoy

(ice hockey) An effort by a penalized team to nullify a penalty and opponent's power play, a length of time during the game when a penalized team has one or more players in the penalty box.

(transitive, intransitive) To kill oneself; commit suicide.

(stock market) A type of stock market or financial derivative order, signifying that the order is to be presented for execution, and if not executed ("filled") immediately (traditionally within a few seconds) is to be cancelled.

(marine biology) An underwater anoxic event, especially one that causes a crash in fish populations / Used other than figuratively or idiomatically: see fish, kill.

Alternative form of winterkill

(Internet slang) Used to express fear, disgust, or strong objection in reaction to something.

past participle of kill steal

(online gaming, derogatory) In a multiplayer online game, to deal a finishing blow on an enemy that other player(s) had almost killed, without their consent, so that one gets the credit or rewards instead of them.