fatback

[ fat-bak ]
/ ˈfætˌbæk /

noun

Chiefly South Midland and Southern U.S. the fat and fat meat from the upper part of a side of pork, usually cured by salt.
a menhaden.
the bluefish, Pomatomus saltatrix.
a mullet.

Origin of fatback

An Americanism dating back to 1700–10; fat + back1

British Dictionary definitions for fatback

fatback
/ (ˈfætˌbæk) /

noun

the fat, usually salted, from the upper part of a side of pork