(けんじゅう)

けんじゅう
noun
handgun, pistol
tool
1. handgun, pistol, revolver
A small firearm designed to be held and fired with one hand.
拳銃(けんじゅう)所持(しょじ)違法(いほう)だ。
Possessing a handgun is illegal.
The suspect was carrying a handgun.
The police seized the illegally possessed handgun.

拳銃(けんじゅう) is composed of (けん) (fist) + (じゅう) (gun) — literally a gun that fits in the fist.

Common collocations

Cultural note: Japan has extremely strict gun control laws (銃刀法(じゅうとうほう)). Private ownership of firearms is nearly completely prohibited. The word appears frequently in crime news and detective fiction but rarely in everyday conversation.