"flint" in the noun sense
a hard kind of stone a form of silica more opaque than chalcedony
2. Flint, Flint River
a river in western Georgia that flows generally south to join the Chattahoochee River at the Florida border where they form the Apalachicola River
a city in southeast central Michigan near Detroit automobile manufacturing
"flint" in the adjective sense
1. flinty, flint, granitic, obdurate, stony
showing unfeeling resistance to tender feelings
"his flinty gaze"
"the child's misery would move even the most obdurate heart"
Source: WordNet® (An amazing lexical database of English)
Princeton University "About WordNet®."
WordNet®. Princeton University. 2010.
View WordNet® License