WHINSTONE

whinstone. Whinstone, n. a species of trap

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Whin″stone″ (?), n. [[Whin + stone; cf. Scot. quhynstane.]] A provincial name given in England to basaltic rocks, and applied by miners to other kind of dark-colored unstratified rocks which resist the point of the pick. — for example, to masses of chert. Whin-dikes, and whin-sills, are names sometimes given to veins or beds of basalt.