| 单词 | screw stone |
| 释义 | > as lemmasscrew stone screw stone n. now rare a fossil produced by the accumulation of sediment within the stem of a crinoid, forming a ribbed, cylindrical cast thought to resemble a screw; cf. sense 6b. ΘΚΠ the world > the earth > structure of the earth > constituent materials > stone > a stone > [noun] > containing fossil screw1663 screw stone1663 typolite1828 boxstone1870 1663 J. Long Let. 22 Oct. in H. Oldenburg Corr. (1965) II. 121 A panthers skinn I shall send upp and the screw stones as also such as sodaynly grow by way of aggregation. 1829 J. Phillips Illustr. Geol. Yorks. I. 109 The screw-stones which are casts in the central hollow of crinoidal columns. 2011 A. M. Roos Web of Nature viii. 169 The coin-like ‘beads’ were known as fairy money, and intact cylindrical stems, ringed with ridges, as screw stones. < as lemmas |
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