1789 J. Williams I. 29 Dykes of basaltes, or other hard stone, which are commonly called whin dykes.
1825 E. Mackenzie (ed. 2) I. 81 The Whin-dikes are filled with basalt, which has apparently issued hot from the interior parts of the earth.
1845 J. Phillips & C. G. B. Daubeny Geol. in VI. 619/1 A few faults in the magnesian limestone range of Durham and Yorkshire, as along the line of the great whindyke.