sludge
noun
[ ˈslʌdʒ ]
• thick, soft, wet mud or a similar viscous mixture of liquid and solid components, especially the product of an industrial or refining process.
• "the dumping of sewage sludge"
Similar:
mud,
muck,
mire,
ooze,
silt,
alluvium,
dirt,
slime,
slush,
slurry,
sediment,
lees,
dregs,
deposit,
grounds,
settlings,
precipitate,
residue,
clag,
clart,
slob,
gunk,
crud,
gloop,
grunge,
gook,
goo,
gunge,
grot,
guck,
glop,
grouts,
• an unattractive muddy shade of brown or green.
• "a sludge green"
• sea ice newly formed in small pieces.
Origin:
early 17th century: of uncertain origin; compare with slush.
