/ Dictionary / Index E East Sussex: Meaning and Definition of Find definitions for: East' Sus'sex Pronunciation: [key] a county in SE England. 657,300; 693 sq. mi. (1795 sq. km). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. East Suffolk eastward Related Content Daily Word Quiz: cetacean Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language