(artillery) A former type of canon the construction of which included an internal layer of wire windings.

(military, slang) A field kitchen.

(US, firearms, slang) Synonym of Saturday-night special

(historical) A gun fired by means of an electric current, formerly used to signal a specific time of day.

(military) Obsolete form of big gun. / (figuratively) A person of great importance or talent.

(firearms) A British machine gun of various calibres used by the British army from 1889 until World War II.

Any gun-shaped device used to apply glue. / A hot glue gun

A style of sophisticated gunplay at close quarters, originating in Hong Kong action films.

Alternative spelling of kung fu

(chiefly US, idiomatic, military, weaponry) A nonfunctional imitation of a gun or of a piece of artillery, typically made of wood and usually intended to deceive enemy forces into overestimating one's available firepower.