Meaning of “sludge” in the English Dictionary

british dictionary

(Definition of “sludge” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"sludge" in American English

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sludgenoun [ U ]

us /slʌdʒ/

wet dirt, or any other thick, wet substance:

The dirty water left a layer of sludge in the bottom of the pail.

(Definition of “sludge” from the Cambridge Academic Content Dictionary © Cambridge University Press)