/ Dictionary / Index Y yellow-bellied: Meaning and Definition of Find definitions for: yel•low-bel•lied Pronunciation: (yel'ō-bel"ēd), [key] — adj. having a yellow abdomen or underside. cowardly; lily-livered. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: yellow-bellied (Thesaurus) yellowback yellow-bellied sapsucker Related Content Daily Word Quiz: profiterole Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language