| Answer | Crossword Clue |
|---|---|
| INSTEP | Arch area |
| SPANDREL | Arch area |
| LUNETTE | Area enframed by an arch |
| lunette | (in the plane of a wall) an area enframed by an arch or vault |
| spandrel | area between the extradoses of two adjoining arches, or between the extrados of an arch and a perpendicular through the extrados at the springing line |
| spandril | area between the extradoses of two adjoining arches, or between the extrados of an arch and a perpendicular through the extrados at the springing line |
