/ Dictionary / Index F fundament: Meaning and Definition of Find definitions for: fun•da•ment Pronunciation: (fun'du-munt), [key] — n. the buttocks. the anus. a base or basic principle; underlying part; foundation. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: fundament (Thesaurus) fund fundamental Related Content Daily Word Quiz: placid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language