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Definition of Firestone
1. Noun. A piece of flint that is struck to light a fire.
Generic synonyms: Flint
2. Noun. A sandstone that withstands intense heat; used to line fireplaces and furnaces and kilns.
Generic synonyms: Sandstone
Definition of Firestone
1. n. Iron pyrites, formerly used for striking fire; also, a flint.
Definition of Firestone
1. [n -S]