/ Dictionary / Index M moon knife: Meaning and Definition of Find definitions for: moon' knife" Pronunciation: [key] a crescent-shaped knife used to scrape hides. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. moon jellyfish moonlet Related Content Daily Word Quiz: winsome Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language