/ Dictionary / Index D dash light: Meaning and Definition of Find definitions for: dash' light" Pronunciation: [key] — Auto. Auto. a light built into the dashboard of an automobile for the purpose of illuminating the gauges and accessories. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. dashing dashpot Related Content Daily Word Quiz: cautious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language