Without a butt (in various senses of the noun); spec. (a) (of a rifle or other object) without a butt (butt, n.6 1) or thicker end; (b) (of a person)…

Of a firearm: cocked by pulling the trigger, not by raising the hammer manually; double-action. Of a firearm’s action: producing this effect.

U.S. Designating a handgun designed (esp. in respect of its size) to be worn on a belt. Cf. belt gun n. at belt, n.1 compounds 3. Now historical…

Without a stock; spec. of an anchor.

sawed-off: spec. (U.S.) used to designate a (shot)gun of which the barrel has been specially shortened to make it easier to handle and give a wider…

That has more than one barrel (usually of a gun or pipette).

Esp. of a gun: having more than one barrel.

sawn-off (now more usually than sawed-off except in North American usage). Of a (shot)gun: = sawed, adj. 1c.