cauldron bottom
Word Rarity
Rare
Frequency: 3.05 in modern English
21
Scrabble Score
14
Letters
3
Syllables
11
Unique Chars
Meaning
noun
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.
British usage; Obsolete; Slang
noun
Used other than figuratively or idiomatically: see cauldron, bottom.
Etymology
From 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.