Breadcrumb Home > Dictionary > Index M moo juice: Meaning and Definition of Find definitions for: moo' juice" Pronunciation: [key] cow's milk. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Moog synthesizer mool ✖ Related Content Daily Word Quiz: evanescent Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language