: the usually long nose and mouth of an animal (such as a dog, horse, or pig)
: a covering for the mouth of a dog that stops it from biting people
: the hole at the end of a gun where the bullet comes out
: to put a muzzle on (a dog) : to place a covering on (the mouth of a dog) to stop biting
: to prevent (a person or group) from speaking or writing in a free or normal way
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