Sul·lage n.
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. Founding The scoria on the surface of molten metal in the ladle.
4. Hydraul. Engin. Silt; mud deposited by water.
Sullage piece Founding, the sprue of a casting. See Sprue, n., 1 (b).
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