/ Dictionary / Index F fanny: Meaning and Definition of Find definitions for: fan•ny Pronunciation: (fan'ē), [key] — pl. -nies. the buttocks. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: fanny (Thesaurus) fanning mill fanny pack Related Content Daily Word Quiz: dissonant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language