/ Dictionary / Index U undergarment: Meaning and Definition of Find definitions for: un•der•gar•ment Pronunciation: (un'dur-gär"munt), [key] — n. an article of underwear. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: undergarment (Thesaurus) underfur undergird Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language