/ Dictionary / Index D doorstone: Meaning and Definition of Find definitions for: door•stone Pronunciation: (dôr'stōn", dōr'-), [key] — n. a stone serving as the sill of a doorway. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. doorstep doorstop Related Content Daily Word Quiz: agitated Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language