fatback

[fat-bak]
noun
  1. 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.
  2. a menhaden.
  3. the bluefish, Pomatomus saltatrix.
  4. a mullet.

Origin of fatback

An Americanism dating back to 1700–10; fat + back1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for fatback

fatback

noun
  1. the fat, usually salted, from the upper part of a side of pork
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for fatback
n.

1903, from fat + back (n.). So called because taken from the back of the animal.

Online Etymology Dictionary, © 2010 Douglas Harper