WHINSTONE
whinstone, whin
(noun) any of various hard colored rocks (especially rocks consisting of chert or basalt)
Source: WordNet® 3.1
Etymology
Noun
whinstone (usually uncountable, plural whinstones)
(quarrying industry) Any hard dark-coloured rock.
Synonym: whin
Anagrams
• non-whites, nonwhites
Source: Wiktionary
Whin"stone", n. Etym: [Whin + stone; cf. Scot. quhynstane.]
Definition: 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.
Source: Webster’s Unabridged Dictionary 1913 Edition