Third-person singular simple present indicative form of muzzle.(verb)
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Use "muzzles" in a sentence
"Two of those 7-inch muzzles were real muzzles, that is, black-tarred wood like the others, but they were hollow so we could train a bomb-lance whaling-gun through them, one to each side."
"Mr. Inhofe in a statement called the Fairness Doctrine "a serious threat to free speech" and warned it "muzzles" the expression of opinion."
"Wikileaks – Germany muzzles WikiLeaks, April 9, 2009"