flintstone
/ˈflɪntˌstoʊn/
noun
- A hard, gray stone that produces sparks when struck against steel, used historically to start fires.
- He rubbed a flintstone against steel to create a spark for the campfire.
- Archaeologists found a flintstone tool used by ancient people.
- She collected a flintstone from the riverbed to practice fire-starting.
Synonyms