| Answer | Crossword Clue |
|---|---|
| tambour | cylindrical construction supporting a dome |
| tambours | cylindrical construction supporting a dome |
| trunnion | either of the two cylindrical projections on a cannon, one on each side for supporting the cannon on its carriage |
| trunnions | either of the two cylindrical projections on a cannon, one on each side for supporting the cannon on its carriage |
| columns | An upright pillar, typically cylindrical and made of stone or concrete, supporting an entablature, arch, or other structure or standing alone as a monument |
| pendentives | A curved triangle of vaulting formed by the intersection of a dome with its supporting arches |
| pendentive | A curved triangle of vaulting formed by the intersection of a dome with its supporting arches |
