firestone
(Anglès)
- Iron pyrite, formerly used for striking fire.
- A flint.
- 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.
Etimologia (Anglès)
From fire + stone.
Stein mit scharfer Kante
pietra fuocaia pietra affilata
فيرستون
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