activated sludge
Noun, Engineering
Throw dirt enough, and some will stick.
Sentence, Idioms
to plough plow one's way through the mud
Verb
to bathe a patient in mud
Verb
to cast aspersions on someone
Verb
to put the finger on sb
Verb
to fling dirt at sb's reputation
Verb
to pelt someone with mud
Verb
to reflect on sb's honour
Verb