chert

Noun

CIDE DICTIONARY

chert, n. [Ir. ceart stone, perh. akin to E. crag.].

An impure, massive, flintlike quartz or hornstone, of a dull color. [1913 Webster]

chert, n. a flintlike form of quartz composed of chalcedony.

Derivative

cherty adj.

Etymology

17th c.: orig. unkn.

For further exploring for "chert" in Webster Dictionary Online

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