[flint] 
| 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. |
| 6. | to furnish with flint. |
[flint] | 1. | Austin, 1812–86, U.S. physician: founder of Bellevue and Buffalo medical colleges. |
| 2. | his son, Austin, 1836–1915, U.S. physiologist and physician. |
| 3. | a city in SE Michigan. 159,611. |
| 4. | Flintshire. |
| flint (flĭnt) n.
[Middle English, from Old English.] |
