/ Dictionary / Index S stickup: Meaning and Definition of Find definitions for: stick•up Pronunciation: (stik'up"), [key] — n. Informal. a holdup; robbery. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: stickup (Thesaurus) stickum stickup man Related Content Daily Word Quiz: acquiesce Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language