Found 1 items, similar to Greenstone.
English → English (gcide) Definition: Greenstone Greenstone \Green"stone`\ (gr[=e]n"st[=o]n`), n. [So called from a tinge of green in the color.] (Geol.) A name formerly applied rather loosely to certain dark-colored igneous rocks, including diorite, diabase, etc. [1913 Webster]