sullage

sullage is a Noun

Definition:

[1] Drainage of filth; filth collected from the street or highway; sewage. [Obs.] The streets were exceedingly large, well paved, having many vaults and conveyances under them for sullage. Evelyn.

[2] That which sullies or defiles. [Obs.] It is the privilege of the celestial luminaries to receive no tincture, sullage, or difilement from the most noisome sinks and dunghills here below. South.

[3] The scoria on the surface of molten metal in the ladle.

[4] Silt; mud deposited by water. Sullage piece (Founding), the sprue of a casting. See Sprue, n., 1 (b).