(underwater diving) a type of knife used by divers, with a wide, serrated blade.

a knife intended for survival purposes in a wilderness environment, often in an emergency situation when the user has lost other equipment.

A range of practices used by organisations to identify, create, represent, and distribute knowledge.

plural of jack-knife

A knot that may be used to keep an object or multiple loose objects together, using a string or a rope that passes at least once around them.

A common binding knot in which the terminal and standing parts are parallel to each other.

Strongly pulled together, tightly knit.

Alternative form of jack of spades

Alternative form of jack of diamonds

Synonym of jack of clubs