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.

noun

glop , goo * , goop , grease , gunk , mire , muck , oil , ooze , scum , sediment , silt , slime , slopnotes:slush is partially melted snow , while sludge is the semisolid material produced by sewage treatment , slop , slush , filth , ice , mud , residue , waste