what is a muzzle for
2. the mouth, or end for discharge, of the barrel of a gun, pistol, etc. 3. a device, usu. an arrangement of straps or wires, placed over an animal's mouth to prevent the animal from biting, eating, etc. 4. to put a muzzle on (an animal or its mouth). 5. to restrain from speech, the expression of opinion, etc.