muzzle
https://gyazo.com/90ceffef37a3c9ae691521edcc44567f
source: By Joshua Sherurcij, Attribution
noun
1. the projecting part of the face, including the nose and mouth, of an animal such as a dog or horse.
(犬・馬などの)鼻口部, 鼻づら
a guard, typically made of straps or wire, fitted over this part of an animal's face to stop it from biting or feeding.
(犬などの)口輪
informal the part of a person's face including the nose, mouth, and chin.
2. the open end of the barrel of a firearm.
銃口, 砲口
verb with object
put a muzzle on (an animal).
〈犬・馬など〉に口輪をはめる
prevent (a person or group) from expressing their opinions freely:
〈人〉に口止めする; 〈言論〉を抑圧する
e.g. the politicians want to muzzle us and control what we write.
ORIGIN
late Middle English: from Old French musel, diminutive of medieval Latin musum, of unknown ultimate origin.