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Meaning of sludge hole | Babel Free

Noun CEFR B2

Definitions

The hand-hole, or manhole, in a steam boiler, by means of which sediment can be removed.

CEFR level

B2
Upper Intermediate
This word is part of the CEFR B2 vocabulary — upper intermediate level.
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See also

sludge metal sludgecore sludgemaker sludger Sludges Sludgier

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