Dictionary entry

Castellan

Webster's Dictionary 1913

Cas″tel‐lan (?), n. [OF. castelain, F. châtelain, L. castellanus pertaining to a castle, an occupant of a caste, LL., a governor of a castle, fr. L. castellum castle, citadel, dim. of castrum fortified place. See Castle, and cf. Chatelaine.] A governor or warden of a castle.