/ Dictionary / Index S smash-up: Meaning and Definition of Find definitions for: smash-up Pronunciation: (smash'up"), [key] — n. a complete smash, esp. a wreck of one or more vehicles. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: smash-up (Thesaurus) smashing smatter Related Content Daily Word Quiz: acme Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language