Flint is a hard, naturally occurring sedimentary rock that can be used for making tools, striking fire, and more. It can also refer to a small piece of metal used in cigarette lighters.

Flint in other uses:

• Flint can be used to strike fire.
• Flint can be used in a musket to make it fire.
• Flint can be used in a cigarette lighter to produce a flame.