meaning of roundhouse
1. A constables prison; a lockup, watch-house, or station house.
2. A cabin or apartament on the after part of the quarter-deck, having the poop for its roof; -- sometimes called the coach.
3. A privy near the bow of the vessel.
4. A house for locomotive engines, built circularly around a turntable.
5. a hook delivered with an exaggerated swing