/ Dictionary / Index S Sussex: Meaning and Definition of Find definitions for: Sus•sex Pronunciation: (sus'iks), [key] — n. a former county in SE England: divided into East Sussex and West Sussex. one of an English breed of red beef cattle. one of an English breed of chickens, raised chiefly for marketing as roasters. a kingdom of the Anglo-Saxon heptarchy in SE England. See map under Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: sussex (Thesaurus) suss Sussex spaniel Related Content Daily Word Quiz: procrastinate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language