A holder of a fief owing homage and service to a lord

• A direct subordinate bound by fealty to a superior
• By extension, a dependent ally or subordinate state

封建制度中受封土地并对领主负有效忠与服役的人

• 受誓约约束的直属附属或臣属
• 引申义：依附的盟友或附属国

Subservient like a vassal; servile or slavish

• Politically or economically dependent on a stronger power

像附庸般顺从的；奴性的

• 在政治或经济上依附于更强势者的

To reduce to vassalage; to make subservient or dependent

• To bring under the control or domination of another

使成附庸；使从属或依附

• 置于他者的控制或支配之下