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

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

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

(historical) A kind of breech-loading steel cannon.

Alternative form of Quaker gun

(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.

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

Alternative spelling of kung fu

A person who is employed as an armed guard, enforcer, or mercenary and who is prepared to use gunplay or similar violent methods in order to assert the interests of his or her employer.

A form of rifled cannon and small arms. The bore has a polygonal section, and the twist is rapid. The ball, which is pointed in front, is made to fit the bore accurately, and is very much elongated, its length being about three-and-a-half times its diameter.