Found 2 items, similar to Firestone.
English → English (WordNet) Definition: firestone firestone n 1: a piece of flint that is struck to light a fire 2: a sandstone that withstands intense heat; used to line fireplaces and furnaces and kilns
English → English (gcide) Definition: Firestone Firestone \Fire"stone`\ (?; 110), n. [AS. f[=y]rst[=a]n flint; f[=y]r fire + st[=a]n stone.] 1. Iron pyrites, formerly used for striking fire; also, a flint. [1913 Webster] 2. A stone which will bear the heat of a furnace without injury; -- especially applied to the sandstone at the top of the upper greensand in the south of England, used for lining kilns and furnaces. --Ure. [1913 Webster]