A kind of fine-grained grey stone (either a hardened shale or a claystone) formerly obtained along the banks of the Ayr and used for hones and…
| 单词 | θ214850 |
| 释义 | society > occupation and work > materials > raw material > stone or rock > [noun] > for whetstones > types of (3) Water of Ayr stone1793 A kind of fine-grained grey stone (either a hardened shale or a claystone) formerly obtained along the banks of the Ayr and used for hones and… novaculite1794 Originally: any of various smooth, hard rocks used to make whetstones. Now: spec. a dense, hard, fine-grained, siliceous rock resembling chert… whet-slate1839 a hard slate used for hones; novaculite. |
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