gun

n.

1. A cannon

   piece, ordnance, heavy ordnance, rifle. see artillery 1, cannon, rocket.

   Types of large guns include: long gun, siege gun, howitzer, mortar, antitank gun, culverin, field piece, bazooka, pom-pom, antiaircraft gun, ack ack*;

2. A portable firearm].

   Types of hand-held guns include: rifle, automatic rifle, semiautomatic rifle, repeating rifle, repeater, recoilless rifle, air rifle, BB gun, air gun, shotgun, sawed-off shotgun, double-barreled shotgun, magazine shotgun, pump-action gun, fowling piece, musket, flintlock, wheel lock, hand gun, muzzle-loader, breech-loader, squirrel gun, needle gun, blunderbuss, carbine, machine gun, submachine gun, Uzi, AK-47, M-1, M-14, M-16, machine pistol, long rifle, laser gun, matchlock, revolver, pistol, automatic, semiautomatic, 9-mm., derringer, horse pistol, gat*, persuader*, rod*, piece*, heater*, burp gun*, Saturday night special*, zip gun*;

3. A device suggestive of a gun

   spray gun, air brush, grease gun, atomizer, syringe, tranquilizer gun.

give it the gun*

go great guns*

jump the gun*

stick to one's guns