/ Dictionary / Index C Castellón de la Plana: Meaning and Definition of Find definitions for: Cas•te•llón de la Pla•na Pronunciation: (käs"te-lyôn' de lä plä'nä, -yôn'), [key] a seaport in E Spain. 93,968. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. castellatus castellum Related Content Daily Word Quiz: acerbity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language