銃じゅう口こうじゅうこうFreq.FrequencyTop 50,000Meanings1nounmuzzle; gunpointRefers to the front opening of a firearm barrel. In contexts like 銃口を向ける, it can mean 'pointing a gun at someone'.犯はん人にんは店てん員いんに銃じゅう口こうを向むけた。The criminal pointed the gun at the store clerk.銃じゅう口こうから煙けむりが出でていた。Smoke was coming from the muzzle.