/ Dictionary / Index E Eastbourne: Meaning and Definition of Find definitions for: East•bourne Pronunciation: (ēst'bôrn, -bōrn, -burn), [key] — n. a seaport in East Sussex, in SE England. 72,700. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. eastbound east by north Related Content Daily Word Quiz: sequester Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language