middlings

noun[plural only]4

1. •
   Commodities that are of intermediate price, quality, or size.
2. •
   Partially refined ore or petroleum.
3. •
   Low-grade or coarse flour; coarse wheat mixed with bran.

   • Buckwheat middlings is a fairly good feed for dairy cows, being far superior to buckwheat bran. — 1917
4. •
   (Southern-US) The part of a pig between the shoulder and the ham.