Definitions
1.NounThe 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."The manor's vassals owed first fruits and a tithe to the parish church, another 10% to the lord (including at least 50 eels), a week or two each year of service in the manor's upkeep, and service in the local fyrd."
2.NounAny 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.NounAny subordinate bound by similar close ties.
4.AdjectiveResembling a vassal; slavish; servile.
5.VerbTo treat as a vassal or to reduce to the position of a vassal; to subject to control; to enslave.
6.VerbTo subordinate to someone or something.