Definition of "sullage"

sullage

/ˈsʌlɪd͡ʒ/

noun
usually uncountable, plural sullages
1. The liquid discharges from kitchens, washbasins, toilets etc; sewage.
  Quotations
  The streets [were] exceedingly large, well paved, having many vaults and conveyances under them for the sullage.
  1645 February 18 (Gregorian calendar), John Evelyn, “”, in William Bray, editor, Memoirs, Illustrative of the Life and Writings of John Evelyn, […], 2nd edition, volume I, London: Henry Colburn, […]; and sold by John and Arthur Arch, […], published 1819
2. Silt or sediment deposited from flowing water.
3. That which sullies or defiles.
  Quotations
  It is the privilege of the celestial luminaries to receive no tincture, sullage, or defilement from the most noisome sinks and dunghills here below.
  1692–1717, Robert South, Twelve Sermons Preached upon Several Occasions, 6th edition, volumes (please specify |volume=I to VI), London: […] J[ames] Bettenham, for Jonah Bowyer, […], published 1727
4. (metallurgy) The scoria on the surface of molten metal in the ladle.