From WordNet (r) 3.0 (2006): sludge n 1: the precipitate produced by sewage treatment 2: any thick, viscous matter [syn: sludge, slime, goo, goop, gook, guck, gunk, muck, ooze]
sludge n 1: the precipitate produced by sewage treatment 2: any thick, viscous matter [syn: sludge, slime, goo, goop, gook, guck, gunk, muck, ooze]
