/ Dictionary / Index D dast: Meaning and Definition of Find definitions for: dast Pronunciation: (dast), [key] — v.i. dare (def. 1). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. dassn't dastard Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language