Available Definitions:
1) n. - The grantee of a fief, feud, or fee; one who holds land of superior, and who vows fidelity and homage to him; a feudatory; a feudal tenant.
2) n. - A subject; a dependent; a servant; a slave.
3) a. - Resembling a vassal; slavish; servile.
4) v. t. - To treat as a vassal; to subject to control; to enslave.