vassal

中文： 封臣、附庸、奴仆、仆从

1. The grantee of a fief, a subordinate granted use of a superior's land and its income in exchange for vows of fidelity and homage and (typically) military service.
2. Any direct subordinate bound by such vows to a superior. · The king ordered his vassals to join him on the crusade unless they had a written note signed by the archbishop or pope.
3. Any subordinate bound by similar close ties. (figuratively)

复数 vassals