/ Dictionary / Index U upchuck: Meaning and Definition of Find definitions for: up•chuck Pronunciation: (up'chuk"), [key] — v.i., v.t. Informal. to vomit. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: upchuck (Thesaurus) upcharge upcoming Related Content Daily Word Quiz: fidelity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language