firestone

名词 firestone:

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

fire.stone

n.（名词）
A flint or pyrite used to strike a fire.
打火石：用于引火的火石或黄铜矿
A fire-resistant stone, such as certain sandstones.
耐火岩石：耐火石，例如某种沙石