sullage

Noun

sullage (usually uncountable, plural sullages)

1. (usually) The liquid discharges from kitchens, washbasins, toilets etc; sewage.
   • The streets [were] exceedingly large, well paved, having many vaults and conveyances under them for the sullage.1645 February 17 (Gregorian calendar), John Evelyn, “[Diary entry for 8 February 1645]”, in William Bray, editor, Memoirs, Illustrative of the Life and Writings of John Evelyn, […], 2nd edition...
2. (usually) Silt or sediment deposited from flowing water.
3. (usually) That which sullies or defiles.
   • , "The Lineal Descent of Jesus of Nazareth from David by his Blessed Mother the Virgin Mary"
     It is the privilege of the celestial luminaries to receive no tincture, sullage, or defilement from the most noisome sinks and dunghills here below.
4. (usually) The scoria on the surface of molten metal in the ladle.