/ Dictionary / Index M morning line: Meaning and Definition of Find definitions for: morn'ing line' Pronunciation: [key] a list of entries for a horse race with the probable betting odds as estimated by a bookmaker or track handicapper, usually issued the morning of the race, before wagering begins. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. morning gun morning loan Related Content Daily Word Quiz: candid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language