/ Dictionary / Index G great-aunt: Meaning and Definition of Find definitions for: great-aunt Pronunciation: (grāt'ant", -änt"), [key] — n. a grandaunt. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: great-aunt (Thesaurus) great auk Great Australian Bight Related Content Daily Word Quiz: fabricate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language