| Definition of 'firestone' |
Princeton's WordNet |
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1. (noun) firestone
a piece of flint that is struck to light a fire
2. (noun) firestone
a sandstone that withstands intense heat; used to line fireplaces and furnaces and kilns
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| Definition of 'firestone' |
Webster Dictionary |
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1. (noun) firestone
iron pyrites, formerly used for striking fire; also, a flint
2. (noun) firestone
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
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Definitions of firestone 
