/ Dictionary / Index E Eastbourne: Meaning and Definition of Find definitions for: East•bourne Pronunciation: (?st'brn, -b?rn, -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: abdicate Analogy of the Day: Today?s Analogy Spelling Bee: Today?s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language