| Answer | Crossword Clue |
|---|---|
| ADDED | Built an ell |
| ADDON | Attach an ell |
| IGAVE | "When ... you an inch, you took an ell": Heywood |
| NESTED | Built an aerie |
| VAULTED | Built with an arch |
| TRIER | Where Trajan built an amphitheater |
| ADEN | Port city built around an old volcano crater |
| ADENYEMEN | Port city built on a crater of an ancient volcano |
