/ Dictionary / Index C castellan: Meaning and Definition of Find definitions for: cas•tel•lan Pronunciation: (kas'tl-n, ka-stel'un), [key] — n. the governor of a castle. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Castel Gandolfo Castellanos Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language