This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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n. A firearm that can be used with one hand.

n. A small, hand-held gun with a relatively short barrel.

n. a firearm that is held and fired with one hand

"Plus, a handgun is a lot easier to conceal then an Ar-15."

firearm    small-arm    piece   

verey pistol    zip gun    automatic pistol    six-gun    automatic    horse pistol    peacekeeper    revolver    semiautomatic    six-shooter   

pistol   

firearm    blaster    revolver    shotgun    pistol    carbine    cartridge    ammo    caliber    musket