名詞 muzzle:

1. the open circular discharging end of a gun
   同義詞：gun muzzle
2. forward projecting part of the head of certain animals; includes the jaws and nose
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
   同義詞：gag

動(dòng)詞 muzzle:

1. fit with a muzzle
2. prevent from speaking out
   同義詞：gag
3. tie a gag around someone's mouth in order to silence them
   同義詞：gag

1. A small metal knob on the muzzle of a firearm, such as a rifle, used for sighting.
   準(zhǔn)星槍炮口上，瞄準(zhǔn)用的小圓金屬突起，如來福槍上的準(zhǔn)星
2. He caught hold of the dog by its muzzle.
   他抓住狗的口鼻，把它逮住了。

muz.zle

n.（名詞）
The forward, projecting part of the head of certain animals, such as dogs, including the mouth, nose, and jaws; the snout.
鼻口部：某些動(dòng)物（比如狗）的頭部向前突出的部分，包括嘴、鼻和下巴；（動(dòng)物的）口鼻部
A leather or wire restraining appliance that, when fitted over an animal`s snout, prevents biting and eating.
動(dòng)物的口套，口絡(luò)：套在動(dòng)物的鼻口部以防止其咬和吃的一種皮質(zhì)或者金屬絲制成的限制裝置
The forward, discharging end of the barrel of a firearm.
噴嘴：消防隊(duì)員用的水管的末端排出口部分
A restraint on free movement or expression:
禁止：自由行動(dòng)和言論的鉗制：
例句：
had a muzzle put on their high spirits.
遏制他們的激情

v.tr.（及物動(dòng)詞）
muz.zled,muz.zling,muz.zles
To put a muzzle on (an animal).
給動(dòng)物套上口絡(luò)
To restrain from expression:
鉗制言論，封住…的嘴：
例句：
tried to muzzle the opposition.
竭力鉗制反對(duì)派言論

來源：
Middle English mosel
中古英語 mosel
from Old French musel
源自 古法語 musel
from Medieval Latin môsellum [diminutive of] môsus [snout]
源自 中世紀(jì)拉丁語 môsellum [] môsus的小后綴 [口鼻部]
from Latin môsum
源自 拉丁語 môsum

【引伸】
muz.zler
n.（名詞）