GREYWACKE


Meaning of GREYWACKE in English

n. (US graywacke) Geol. a dark and coarse-grained sandstone, usu. with an admixture of clay.

[ Anglicized f. G Grauwacke f. grau grey: see WACKE ]

Concise Oxford English dictionary.      Краткий оксфордский словарь английского языка.