roundhouse

1. A circular prison, especially a small local lockup or station house.
2. A traditional circular dwelling elevated on stilts with a conical roof found in part of Southeast Asia.
3. A prehistoric dwelling typical of northwest Europe in the Iron Age and Bronze Age.
4. The uppermost room or cabin of any note upon the stern of a ship.
5. A privy near the bow of a vessel, especially as reserved for officers.
6. A circular building in which locomotives are housed, sometimes with a turntable.
7. A punch or kick delivered with an exaggerated sweeping movement. (US)
8. In the game of pinochle, a meld consisting of a queen and king in each of the four suits.

Plural roundhouses