/ Dictionary / Index E eighty-one: Meaning and Definition of Find definitions for: eight•y-one Pronunciation: (ā'tē wun'), [key] — n. a cardinal number, 80 plus 1. a symbol for this number, as 81 or LXXXI. a set of this many persons or things. —adj. amounting to 81 in number. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: eighty-one (Thesaurus) eighty-ninth eighty-second Related Content Daily Word Quiz: gregarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language