/ Dictionary / Index R roosterfish: Meaning and Definition of Find definitions for: roost•er•fish Pronunciation: (r'stur-fish"), [key] — pl. -fish•es, -fish. a large, edible fish, Nematistius pectoralis, inhabiting the warmer waters of the Pacific Ocean, having the first dorsal fin composed of brightly colored filamentous rays. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. rooster rooster tail Related Content Daily Word Quiz: vertigo Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language