Meaning of SLUDGE in English

SLUDGE

n.1 thick greasy mud.

2 muddy or slushy sediment.

3 sewage.

4 Mech. an accumulation of dirty oil, esp. in the sump of an internal-combustion engine.

5 Geol. sea-ice newly formed in small pieces.

6 (usu. attrib.) a muddy colour (sludge green).

Derivatives:

sludgy adj.

Etymology: cf. SLUSH

Oxford English vocab.      Оксфордский английский словарь.