/ Dictionary / Index P prickleback: Meaning and Definition of Find definitions for: prick•le•back Pronunciation: (prik'ul-bak"), [key] — n. any of several blennioid fishes of the family Stichaeidae, usually inhabiting cold waters, having spiny rays in the dorsal fin. stickleback. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: prickleback (Thesaurus) prickle prickly Related Content Daily Word Quiz: fervor Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language