■ noun
1》 the projecting part of the face, including the nose and mouth, of an animal such as a dog or horse.
↘a guard fitted over an animal's ~ to stop it biting or feeding.
2》 the open end of the barrel of a firearm.
■ verb
1》 put a ~ on (an animal).
2》 prevent from freedom of expression.
Origin
ME: from OFr. musel , dimin. of med. L. musum .