A hard, gray or black stone that was historically struck with steel to produce sparks for starting fires.
Compound of 'flint,' from Old English 'flint' (hard stone), and 'stone.' Flint has been used for millions of years to make tools and fire, and the compound term emphasizes its use in fire-making.
Flint is so hard and sharp that people have used it for 2.5 million years—humans in Africa used flint chips before any other tool, making it literally the first technology in human history!
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