cauldron bottom
cauldron bottom · cauldron bottoms
Used other than figuratively or idiomatically: see cauldron, bottomUsed other than figuratively or idiomatically: see cauldron, bottom.
Meaning
2 sensesUsed other than figuratively or idiomatically: see cauldron, bottom.
(UK, obsolete, slang)A large, round mass in a coal seam that forms part of the roof of a coal mine passage (usually being a fossilized root or stump); considered a hazard due to being prone to falling without warning.
Origin
From cauldron + bottom, in reference to the shape and colour as seen from the perspectiveFrom cauldron + bottom, in reference to the shape and colour as seen from the perspective of someone in the coal mine. Compare Sicilian campanaru (literally “bell tower”) in sulfur mining.
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Forms
plural: cauldron bottoms| Singular | cauldron bottom |
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| Plural | cauldron bottoms |
regular