Pronunciation: (vas'ul),[key] —n. 1. (in the feudal system) a person granted the use of land, in return for rendering homage, fealty, and usually military service or its equivalent to a lord or other superior; feudal tenant.
2. a person holding some similar relation to a superior; a subject, subordinate, follower, or retainer.
3. a servant or slave.
—adj. 1. of, pertaining to, or characteristic of a vassal.
2. having the status or position of a vassal.