vassal

Từ điển Oxford Advanced Learner 8th

vas·sal [vassal vassals] BrE [ˈvæsl] NAmE [ˈvæsl] noun
1. a man in the Middle Ages who promised to fight for and be loyal to a king or other powerful owner of land, in return for being given land to live on
2. a country that depends on and is controlled by another country

Word Origin:
late Middle English: via Old French from medieval Latin vassallus ‘retainer’, of Celtic origin.

• Từ đồng nghĩa / Synonyms:
  liege, liegeman, liege subject, feudatory