pistol

Short definition from Wiktionary

Noun

1. 1
   A handgun
2. 2
   A handgun: The type of handgun with the chamber integral with the barrel.
3. 3
   The mechanical component of a fuse in a bomb or torpedo responsible for firing the detonator.
4. 4
   A lively, high-energy person.
5. 5
   An offensive formation in which the quarterback receives the snap at a distance behind the center, but closer than in a shotgun formation, with a running back lined up behind him.

Verb

1. 1
   To shoot (at) a target with a pistol.