sludge hole
noun1
The hand-hole, or manhole, in a steam boiler, by means of which sediment can be removed.
Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.
noun
The hand-hole, or manhole, in a steam boiler, by means of which sediment can be removed.
Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.
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