Pronunciation: (flint),[key] —n. 1. a hard stone, a form of silica resembling chalcedony but more opaque, less pure, and less lustrous.
2. a piece of this, esp. as used for striking fire.
3. a chunk of this used as a primitive tool or as the core from which such a tool was struck.
4. something very hard or unyielding.
5. a small piece of metal, usually an iron alloy, used to produce a spark to ignite the fuel in a cigarette lighter.
—v.t. to furnish with flint.
Pronunciation: (flint),[key] —n. 1. Austin, 1812–86, U.S. physician: founder of Bellevue and Buffalo medical colleges.
2. his sonAustin, 1836–1915, U.S. physiologist and physician.
3. a city in SE Michigan. 159,611.