muzzle (Noun) — The open circular discharging end of a gun.
muzzle (Noun) — Forward projecting part of the head of certain animals; includes the jaws and nose.
muzzle (Noun) — A leather or wire restraint that fits over an animal's snout (especially a dog's nose and jaws) and prevents it from eating or biting.
muzzle (Noun) — Restraint put into a person's mouth to prevent speaking or shouting.
muzzle (Verb) — Fit with a muzzle. ex. "muzzle the dog to prevent it from biting strangers"
muzzle (Verb) — Prevent from speaking out. ex. "The press was muzzled"
muzzle (Verb) — Tie a gag around someone's mouth in order to silence them. ex. "The burglars muzzled the home owner and tied him to a chair"