/ Dictionary / Index M moonbow: Meaning and Definition of Find definitions for: moon•bow Pronunciation: (mn'bō"), [key] — n. a rainbow caused by the refraction and reflection of light from the moon. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. moon blindness mooncalf 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