flint

noun
1
a type of very hard grey stone that can produce a spark when it is hit against steel; a piece of this stone
چخماق, سنگ چخماق, سنگ آتش‌زنه
2
a piece of flint or hard metal that is used to produce a spark
سنگ چخماق, سنگ آتش‌زنه, چخماق