Muz·zle n.
1. The projecting mouth and nose of a quadruped, as of a horse; a snout.
2. The mouth of a thing; the end for entrance or discharge; as, the muzzle of a gun.
3. A fastening or covering (as a band or cage) for the mouth of an animal, to prevent eating or vicious biting.
With golden muzzles all their mouths were bound --Dryden.
Muzzle sight. Gun. See Dispart, n., 2.
Dis·part, n.
1. Gun. The difference between the thickness of the metal at the mouth and at the breech of a piece of ordnance.
On account of the dispart, the line of aim or line of metal, which is in a plane passing through the axis of the gun, always makes a small angle with the axis. --Eng. Cys.
2. Gun. A piece of metal placed on the muzzle, or near the trunnions, on the top of a piece of ordnance, to make the line of sight parallel to the axis of the bore; -- called also dispart sight, and muzzle sight.