Roundhouse

·noun A privy near the bow of the vessel.

II. Roundhouse ·noun A constable's prison; a lockup, watch-house, or station house.

III. Roundhouse ·noun A house for locomotive engines, built circularly around a turntable.

IV. Roundhouse ·noun A cabin or apartament on the after part of the quarter-deck, having the poop for its roof;

— sometimes called the coach.