/ Dictionary / Index H haddock: Meaning and Definition of Find definitions for: had•dock Pronunciation: (had'uk), [key] — pl. -dock, -docks. a North Atlantic food fish, Melanogrammus aeglefinus, of the cod family. the rosefish, Sebastes marinus. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: haddock (Thesaurus) Haddington Haddon Related Content Daily Word Quiz: sequester Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language