gunman Syllabification: (gun·man)Pronunciation: /ˈgənmən/Translate gunman | into French | into German | into Italian | into Spanish Definition of gunman noun (plural gunmen) a man who uses a gun to commit a crime or terrorist act:a gang of masked gunmen one who has to do with guns or is engaged in their manufacture. gunman in other Oxford dictionaries Definition of gunman in the British & World English dictionary