The Cornish Miners' term for clay-slate; geologically, the clay-slate of Cornwall, of Devonian age, which rests on the granite.
| 单词 | θ5655 |
| 释义 | the world > the earth > structure of the earth > constituent materials > rock > metamorphic rock > [noun] > slate > argillaceous > varieties of (5) killas1673 The Cornish Miners' term for clay-slate; geologically, the clay-slate of Cornwall, of Devonian age, which rests on the granite. razea1728 A clay slate found in Cornwall; = killas, n. hone-stone1796 (a) = sense 2; (b) a hard, fine-grained rock used for sharpening blades, esp. novaculite; cf. sense 3. whet-slate1839 a hard slate used for hones; novaculite. Arkansas1869 A fine-grain variety of novaculite found in Arkansas, U.S.A. Also, a whetstone made of this. In full Arkansas hone, Arkansas stone (see quots.). |
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