clay of a bluish colour; esp. (a) a kind of ball clay used to make earthenware; (b) = blue ground n. at compounds 1d.
| 单词 | θ6049 |
| 释义 | the world > the earth > structure of the earth > constituent materials > earth or soil > kind of earth or soil > [noun] > mineral soil > blue earth (4) blue clay1577 clay of a bluish colour; esp. (a) a kind of ball clay used to make earthenware; (b) = blue ground n. at compounds 1d. blue1873 South African. = blue ground n. at compounds 1d. Usually with the. Now chiefly historical. blue ground1881 the brecciated igneous rock, typically dark greyish-blue, in which diamonds may be found; = kimberlite, n.; cf. yellow ground n. at yellow, adj. n.c… blue earth1883 = blue ground n. |
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