CHERT


Meaning of CHERT in English

[ tʃə:t ]

■ noun a hard, dark, opaque rock composed of silica (chalcedony) with an amorphous or microscopically fine-grained texture.

Derivatives

~y adjective

Origin

C17 (orig. dialect): of unknown origin.

Concise Oxford English vocab.      Сжатый оксфордский словарь английского языка.