croyl Obs. or dial.
(See quot.)
| 1836 J. Phillips Illustr. Geol. Yorksh. ii. 28 Croyl, or indurated clay with shells. |
Hence, perhaps, † croylstone, a name for native sulphate of barium; cawk.
| 1728 Woodward Fossils 18 Croyl-Stone, Craulgum, Crystalliz'd Cauk; likewise from the Peak Lead Mines. In this the Crystalls are very small. |