(Internet) To add (a user) to a kill file.

A security measure used to switch off a device in an emergency.

plural of kill file

(military, slang) An instance of damaging a vehicle by weaponry that renders it both unusable and unrepairable.

(military, slang) The damage inflicted by a weapon on a vehicle that destroys its weapon systems, or substantially reduces its ability to deliver weapons accurately, but does not significantly affect its ability to move.

(military, slang) The damage inflicted by a weapon on a vehicle that immobilises it, but does not totally destroy it, leaving the vehicle's crew able to use its weapons. Typically this term is used to refer to tanks and other armoured fighting vehicles that have their engines, tracks, or running gear damaged.

(military, slang) An attack or damage inflicted by a weapon that does not destroy a military vehicle but results in it taking no further part in its intended mission.

Third-person singular simple present indicative form of winter-kill

(transitive) To kill by the effects of wintery conditions / (intransitive) To die from the lethal effects of wintery conditions

(idiomatic, informal) To dress up so as to impress others (especially of the opposite sex).