Definitions for "Middlings"
A combination of the coarser parts of ground wheat the finest bran, separated from the fine flour and coarse bran in bolting; -- formerly regarded as valuable only for feed; but now, after separation of the bran, used for making the best quality of flour. Middlings contain a large proportion of gluten.
Byproducts of milling certain grains comprised of fine particles of germ and bran.
In coal preparation, this material called mid-coal is neither clean nor refuse; due to their intermediate specific gravity, middlings sink only partway in the washing vessels and are removed by auxiliary means.
That part of the product of a washery, concentration, or preparation plant which is neither clean coal nor mineral nor reject (tailings). It consists of fragments of coal and shale or mineral and gangue. The material is often sent back for crushing and retreatment.
Keywords:  bacon, hog, ham, southern, shoulder
In the southern and western parts of the United States, the portion of the hog between the ham and the shoulder; bacon; -- called also middles.
Keywords:  froth, bitumen, clay, sand, mixture
The mixture of water, clay, sand and bitumen that remains between the bitumen froth at the surface and the sand at the bottom of a primary separation vessel.