(UK) Criminal activity involving knives, especially when gang-related.

Alternative form of twist the knife

A knife designed and weighted so that it can be thrown effectively, typically as a weapon or for competitions of knife-throwing skill.

A piece of steel sharpened to an acute edge or angle, and resting on a smooth surface, serving as the axis of motion of a pendulum, scale beam, or other piece required to oscillate with the least possible friction.

A switch used to control the flow of electricity in a circuit, consisting of a hinge which allows a metal lever, or knife, to be lifted from or inserted into a slot or jaw to break or make electrical contact.

A small knife, with a thin, flexible blade, used by clickers to cut leather

A kind of knife whose blade or blades can be folded inside the handle; such a knife is usually a pocketknife.

A set of knives in a leather or similar holster that rolls out flat for use.

A large hand-wielded cutting tool similar to a machete, used for cutting sugar cane.

(medicine) A machine that produces and focuses beams of gamma rays at a specific location in the body, used to burn up diseased tissues.