draff

plural draffs

1. uncountableusuallyA byproduct from a brewery, a distillery, or both, often fed to pigs or cattle as part of their ration; often synonymous with distillers' grains, brewers' spent grains, or both (when not differentiated); usually differentiated from potale, at least in technical use, although broad, nontechnical use has often lumped all such byproducts together, especially in the past.

   Near-synonyms: brewers' spent grains, BSG, distillers' grains

   2 more examples

   […] and thence ſprouteth that obſcene appellation of Sarding ſandes, with the draffe of the carterly Hoblobs thereabouts, concoct or diſgeaſt for a ſcripture, verity, when the right chriſtendome of it, is Cerdicke ſands, or Cerdick ſhore, […]

   1599, [Thomas] Nashe, Nashes Lenten Stuffe, […], London: […] [Thomas Judson and Valentine Simmes] for N[icholas] L[ing] and C[uthbert] B[urby] […], →OCLC, pages 8–9

   A crowd immersed in ordure, that appear'd draff of the human body.

   c. 1805-1814, Dante Alighieri, Henry Francis Cary (translator), The Divine Comedy Canto 18

   Synonyms: dregs, hogwash, brewers' spent grains, BSG, distillers' grains