/ Dictionary / Index P pearlfish: Meaning and Definition of Find definitions for: pearl•fish Pronunciation: (pûrl'fish"), [key] — pl. -fish•es, -fish. any of several small fishes of the family Carapidae, living within pearl oysters, sea cucumbers, starfishes, etc. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: pearlfish (Thesaurus) pearleye pearl gray Related Content Daily Word Quiz: deleterious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language