1.  haddock(n = noun.food) - lean white flesh of fish similar to but smaller than cod; usually baked or poached or as fillets sauteed or fried;
is a kind of fish
is a part of haddock, melanogrammus aeglefinus
has particulars: finnan, finnan haddie, finnan haddock, smoked haddock

2.  haddock(n = noun.animal) melanogrammus aeglefinus - important food fish on both sides of the Atlantic; related to cod but usually smaller;
is a kind of gadoid, gadoid fish
has parts: haddock
is a member of genus melanogrammus, melanogrammus

   A marine food fish (Melanogrammus æglefinus), allied to the cod, inhabiting the northern coasts of Europe and America. It has a dark lateral line and a black spot on each side of the body, just back of the gills. Galled also haddie, and dickie. [1913 Webster]

haddock, n. (pl. same) a marine fish, Melanogrammus aeglefinus, of the N. Atlantic, allied to cod, but smaller.

Etymology:
ME, prob. f. AF hadoc, OF (h)adot, of unkn. orig.

finnan haddock, smoked haddock