1.  flitch(n = noun.food) - fish steak usually cut from a halibut;
is a kind of fish steak

2.  flitch(n = noun.food) side of bacon - salted and cured abdominal wall of a side of pork;
is a kind of bacon
is a part of side of pork
has parts: gammon

1.  The side of a hog salted and cured; a side of bacon. Swift. [1913 Webster]

2.  One of several planks, smaller timbers, or iron plates, which are secured together, side by side, to make a large girder or built beam. [1913 Webster]

3.  The outside piece of a sawed log; a slab. [1913 Webster]

   To cut into, or off in, flitches or strips; as, to flitch logs; to flitch bacon. [Webster 1913 Suppl.]

flitch, n.
1 a side of bacon.
2 a slab of timber from a tree-trunk, usu. from the outside.
3 (in full flitch-plate) a strengthening plate in a beam etc.

Idiom:
flitch-beam a compound beam, esp. of an iron plate between two slabs of wood.

Etymology:
OE flicce f. Gmc