Round"house` (?), n. 1.
A constable's prison; a lockup, watch-house, or station
house. [Obs.]
2. (Naut.) (a) A cabin
or apartament on the after part of the quarter-deck, having the poop
for its roof; -- sometimes called the coach.
(b) A privy near the bow of the vessel.
3. A house for locomotive engines, built
circularly around a turntable.