/ Dictionary / Index C cusk: Meaning and Definition of Find definitions for: cusk Pronunciation: (kusk), [key] — pl. cusks, cusk. an edible marine fish, Brosme brosme, of North Atlantic coastal waters. the burbot. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: cusk (Thesaurus) cushy cusk-eel 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