puff stone
English regional
noun
A soft, porous, calcareous rock; tufa.
Origin
Mid 17th century; earliest use found in John Smyth (1567–1641), antiquary and parliamentary diarist.
| 单词 | puff stone |
| 释义 | puff stoneEnglish regional noun A soft, porous, calcareous rock; tufa. Origin |
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