/ Dictionary / Index B butterflyfish: Meaning and Definition of Find definitions for: but•ter•fly•fish Pronunciation: (but'ur-flī"fish"), [key] — pl. -fish•es, -fish. any tropical marine fish of the family Chaetodontidae, having large, broad fins or brilliant coloration, or both. See a blenny, Blennius ocellaris, of Europe. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: butterflyfish (Thesaurus) butterfly effect butterfly flower Related Content Daily Word Quiz: lunar Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language