| Answer | Crossword Clue |
|---|---|
| SANK | Sent to the ocean floor |
| SUNK | Sent to the ocean's floor |
| subocean | of, pertaining to, or on the floor of the ocean |
| DAVYJONESLOCKER | Ocean floor, to a pirate |
| hypocaust | A hollow space under the floor of an ancient Roman building, into which hot air was sent for heating a room or bath |
| hypocausts | A hollow space under the floor of an ancient Roman building, into which hot air was sent for heating a room or bath |
