/ Dictionary / Index U underthings: Meaning and Definition of Find definitions for: un•der•things Pronunciation: (un'dur-thingz"), [key] — n.pl. women's underclothes. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. under-the-table underthroating 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