English noun: sludge | |||
1. | sludge (substance) the precipitate produced by sewage treatment | ||
Broader (hypernym) | precipitate | ||
2. | sludge (substance) any thick, viscous matter | ||
Synonyms | goo, gook, goop, guck, gunk, muck, ooze, slime | ||
Broader (hypernym) | matter | ||
Narrower (hyponym) | sapropel | ||