- mud, mire, or ooze; slush.
- a deposit of ooze at the bottom of a body of water.
- any of various more or less mudlike deposits or mixtures.
- the sediment in a steam boiler or water tank.
- broken ice, as on the sea.
- a mixture of some finely powdered substance and water.
- sediment deposited during the treatment of sewage.
- Also called activated sludge. Bacteriology. sewage sediment that contains a heavy growth of microorganisms, resulting from vigorous aeration.
- a fine, mudlike powder produced by a mining drill.
- soft mud, snow, etc
- any deposit or sediment
- a surface layer of ice that has a slushy appearance
- (in sewage disposal) the solid constituents of sewage that precipitate during treatment and are removed for subsequent purification
“mud, mire, ooze,” 1640s, of uncertain origin, possibly a variant of Middle English slutch “mud, mire,” or a variant of slush (n.).