n.
1.the open circular discharging end of a gun
2.forward projecting part of the head of certain animals
3.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
4.restraint put into a person's mouth to prevent speaking or shouting muzzle v.
1.fit with a muzzle
2.prevent from speaking out
3.tie a gag around someone's mouth in order to silence them