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American Dictionary of the English Language

Webster's Dictionary 1828

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Wacky


WACKY,noun A rock nearly allied to basalt, of which it may be regarded as a more soft and earthy variety. Its color is a greenish gray, brown or black. It is opake, yields easily to the knife, and has a greasy feel. Its principal ingredient is silex. Gray wacky is a different species of rock, being a kind of sandstone. wacky is a mineral sunstance intermediate between clay and basalt.