/ Dictionary / Index D downwash: Meaning and Definition of Find definitions for: down•wash Pronunciation: (doun'wosh", -wôsh"), [key] — n. Aeron. a deflection of air downward relative to an airfoil that causes the deflection. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. downward mobility downwelling Related Content Daily Word Quiz: reclusive Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language