fatback

From fat +‎ back.

fatback (plural fatbacks)

1. (US) A layer of fat, along the back of a pig, used as a cut of meat or to make lard
2. A fish, the menhaden.

• “fatback”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.

• backfat