a man in the Middle Ages who promised to fight for and show support for a king or other powerful owner of land, in return for being given land to live on 封臣，家臣（中世纪为国王或其他权贵效忠的受封者） a country that depends on and is controlled by another country 附庸国；属国 a vassal state 附庸国
Word Originlate Middle English: via Old French from medieval Latin vassallus ‘retainer’, of Celtic origin.