Breadcrumb Home > Dictionary Cite Meaning of washup Find definitions for: wash•up Pronunciation: (wosh'up", wôsh'-), [key] — n. an act of washing: Allow five minutes for washup. a place, as a bathroom, for washing. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: washup (Thesaurus) washtub washwoman Related Content Daily Word Quiz: apotheosis Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language