Possibly related toslush.
sludge (countable anduncountable,pluralsludges)
- Solids separated fromsuspension in a liquid.
2013 June 29, “High and wet”, inThe Economist, volume407, number8842, page28:Floods in northern India, mostly in the small state of Uttarakhand, have wrought disaster on an enormous scale.[…]Rock-filled torrents smashed vehicles and homes, burying victims under rubble andsludge.
- Aresidual semi-solidmaterial left from industrial, water treatment, or wastewater treatment processes.
- A sediment of accumulated minerals in a steam boiler.
- A mass of small pieces of ice on the surface of a water body.
- (uncountable, music)Ellipsis ofsludge metal.
generic term for separated solids
residual material from a process
sediment of minerals in a steam boiler
sludge (third-person singular simple presentsludges,present participlesludging,simple past and past participlesludged)
- (intransitive, informal) Toslump orslouch.
- (intransitive) Toslop ordrip slowly.