Wordnet 3.0
NOUN (1)
1.
salt pork from the back of a hog carcass;
The Collaborative International Dictionary of English v.0.48:
Fatback \Fat"back`\, n. (Zool.)
The menhaden.
[1913 Webster]
WordNet (r) 3.0 (2006):
fatback
n 1: salt pork from the back of a hog carcass