FLINT'Y, adjective 1. Consisting of flint; as a flinty rock. 2. Like flint; very hard, not impressible; as a flinty heart. 3. Cruel; unmerciful; inexorable. 4. Full of flint stones, as flinty ground. Flinty-slate, a mineral of two kinds, the common and the Lydian stone.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI