- a dark-colored variety of chert that produces sparks when struck with steel and that breaks into pieces with sharp cutting edges
- a piece of this stone, used to start a fire, for primitive tools, etc.
- a small piece of metal consisting of iron and misch metal, used to strike the spark in a cigarette lighter
- anything extremely hard or firm like flint
Origin of flintMiddle English from OE, akin to Norw, stone splinter: see flinders