[had-uh
k] 
) -dock, (especially referring to two or more kinds or species) -docks. | 1. | a North Atlantic food fish, Melanogrammus aeglefinus, of the cod family. |
| 2. | the rosefish, Sebastes marinus. |
| had·dock (hād'ək) n. pl. haddock or had·docks A food fish (Melanogrammus aeglefinus) of northern Atlantic waters, related to and resembling the cod. [Middle English haddok.] |