| Answer | Crossword Clue |
|---|---|
| vaulting | arched space, chamber, etc. |
| vault | arched space, chamber, etc. |
| vaulted | arched space, chamber, etc. |
| vaults | arched space, chamber, etc. |
| vaultier | space covered by an arched structure |
| floored | main level space (as in a stock exchange or legislative chamber) distinguished from a platform or gallery |
| plena | space, usually between floors, that can serve as a receiving chamber for air that has been heated or cooled to be distributed to inhabited areas |
| plenum | space, usually between floors, that can serve as a receiving chamber for air that has been heated or cooled to be distributed to inhabited areas |
