DREGS, n. Plu. Gr.

1. The sediment of liquors lees grounds feculence any foreign matter of liquors that subsides to the bottom of a vessel.
2. Waste or worthless matter dross sweepings refuse. Hence, the most vile and despicable part of men as the dregs of society.

Dreg, in the singular, is found in Spenser, but is not now used.