(sports) To begin a race too soon, before the starting gun goes off. / (idiomatic) To act or begin too soon or without due caution.

A type of short range machine gun that is carried as a personal weapon and uses pistol ammunition.

A type of fully automatic firearm that fires bullets in rapid succession by a single action of the trigger and is capable of sustained fire.

(basketball, often attributive) To move the ball quickly and shoot often.

A gun rigged to fire when a tripwire is crossed.

(idiomatic) Evidence, particularly of a crime, that is difficult or impossible to dispute.

(military) A large artillery gun or one of the largest-caliber naval guns (as on a battleship).

(informal) A new or rising talent or star; rising star.

(euphemistic) Used to express anger, contempt, disgust, astonishment, disappointment, etc.

(euphemistic) son of a bitch / Used encouragingly or to compliment