| Answer | Crossword Clue |
|---|---|
| CHERTS | Pieces of flinty rock |
| clint | an outcrop of flinty rock |
| clints | CLINT, an outcrop of flinty rock |
| CLINT | Flinty rock: Scot. |
| buhrstone | a cellular, flinty rock, used for mill stones also BUHR, BURRSTONE, BURSTONE |
| burrstone | a cellular, flinty rock, used for mill stones also BUHR, BUHRSTONE, BURSTONE |
| buhrstones | BUHRSTONE, a cellular, flinty rock, used for mill stones also BUHR, BURRSTONE, BURSTONE |
| burrstones | BURRSTONE, a cellular, flinty rock, used for mill stones also BUHR, BUHRSTONE, BURSTONE |
