/ Dictionary / Index D daymark: Meaning and Definition of Find definitions for: day•mark Pronunciation: (dā'märk"), [key] — n. a navigational aid distinctively marked for visibility by day. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. daymare day name 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