/ Dictionary / Index L loony tunes: Meaning and Definition of Find definitions for: loon'y tunes" Pronunciation: [key] — pl., loony tunes. loony. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. loony bin loop Related Content Daily Word Quiz: tenacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language