firestone   (TTS Sound)

The firestone has 2 Senses.

• firestone
• 火打石
• a piece of flint that is struck to light a fire
• たたいて火を起こすのに使われる火打石のかけら

• firestone
• a sandstone that withstands intense heat; used to line fireplaces and furnaces and kilns
• 高熱に耐える砂岩