(1):

(n.) One of several planks, smaller timbers, or iron plates, which are secured together, side by side, to make a large girder or built beam.

(2):

(n.) The outside piece of a sawed log; a slab.

(3):

(n.) The side of a hog salted and cured; a side of bacon.

(4):

(n.) To cut into, or off in, flitches or strips; as, to flitch logs; to flitch bacon.