Read the dictionary definition of flint. All definitions for this word.
1. a city in southeast central Michigan near Detroit; automobile manufacturing
2. a river in western Georgia that flows generally south to join the Chattahoochee River at the Florida border where they form the Apalachicola River
3. a hard kind of stone; a form of silica more opaque than chalcedony
4. showing unfeeling resistance to tender feelings
1. his flinty gaze
2. the child's misery would move even the most obdurate heart