n The protruding part of many animal's head which includes nose, mouth and jaws; snout
n The mouth or the end for entrance or discharge of a gun, pistol etc., that the bullet emerges from as opposed to the breech.
n A device used to prevent animal from biting or eating, which is worn on its snout.
n (chiefly|Scotland) A piece of the forward end of the plow-beam by which the traces are attached; bridle
n (obsolete|historical) An openwork covering for the nose, used for the defense of the horse, and forming part of the bards in the 15th and 16th centuries.
v (transitive) To bind or confine animal's mouth by putting a muzzle, as to prevent it from eating or biting.
v (transitive|figuratively) To restrain (from speaking, expressing opinion or acting); gag, silence.