| Answer | Crossword Clue |
|---|---|
| KEYED | Fitted the last stone in an arch. |
| springer | The lowest stone in an arch, where the curve begins |
| springers | The lowest stone in an arch, where the curve begins |
| keystones | A central stone at the summit of an arch, locking the whole together |
| crossette | (French) a small projecting part of an impost-stone at the extremity of an arch |
| crossettes | CROSSETTE, (French) a small projecting part of an impost-stone at the extremity of an arch |
