n. 圆形机车库, 拘留所, 大抡拳

Roundhouse \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.