n. forward projecting part of the head of certain animals; includes the jaws and nose
n. 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
v. fit with a muzzle
n. 动物之鼻口, 口套, 枪口
vt. 戴口套于, 使缄默