n.
Pronunciation: ' sl ə j
Function: noun
Etymology: Middle English slugge, perhaps alteration of slicche mud, slush; akin to Old High German sl ī h mire
Date: 15th century
1 : MUD , MIRE especially : a muddy deposit (as on a riverbed) : OOZE
2 : a muddy or slushy mass, deposit, or sediment: as a : precipitated solid matter produced by water and sewage treatment processes b : muddy sediment in a steam boiler c : a precipitate or settling (as a mixture of impurities and acid) from a mineral oil
3 : SLUSH 5
– sludgy \ ' sl ə -j ē \ adjective