What does muzzle mean?
Muzzle is a compact word with three linked uses. As a noun, it can name a guard or strap fitted over an animal's nose and mouth to prevent biting, the animal's nose and mouth itself, or the front opening of a firearm barrel. In the last sense, related expressions such as muzzle velocity and muzzle flash describe what happens as a projectile leaves a weapon. As a verb, to muzzle means to fit such a restraint on an animal, but it is more often used figuratively: one can muzzle criticism, speech, creativity, or ambition through forceful restriction. The animal and weapon senses share an image of controlling or directing what projects outward from the front of something. Figurative uses tend to be critical of censorship or institutional restraint, while the literal verb can sound technical or practical, especially in relation to dogs and other animals. Knowing the noun's several senses helps distinguish a safety device from a firearm's front end, while the figurative verb makes the word useful in discussions of speech, power, and inhibition.
As a noun, a muzzle is a device fitted over an animal's mouth and sometimes its nose to prevent biting; it can also refer to the animal's nose and mouth or to the front opening of a firearm barrel.
"A muzzle can be a practical safety device or, in firearms terminology, the front opening of a barrel."
In the sense of the animal's own mouth and nose, the usual expression is "the muzzle of" an animal.
As a verb, to muzzle means to restrain an animal by fitting a muzzle over its mouth, or to restrict or suppress speech, sound, activity, criticism, or expression.
"Official censorship cannot completely muzzle the desire for free expression."
The figurative use is common in formal and political contexts and usually has a critical connotation.
The plural refers to several restraints, several animals' muzzles, or several firearm openings.
"Several muzzles lay beside the kennels."
The same word that restrains a snarling dog can silence a speaker—and name the business end of a gun barrel.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does muzzle come from?
The word appears in Middle English as musel and in Old French as musel. These forms are generally traced to Medieval Latin musellus, a diminutive of Latin mus, meaning “mouse,” probably because a small animal's muzzle resembles its head or snout. The sense referring to the front of a firearm barrel developed later by extension.
Related word forms
How muzzle is actually used
The noun is common in both practical and technical contexts, especially in relation to animals and firearms. The verb is especially common in figurative expressions such as muzzle criticism, speech, creativity, or ambition; these uses generally imply forceful or excessive restriction.