ROUNDHOUSE

roundhouse. Roundhouse, n. a room, poop of a ship

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Round″house′ (?), n. 1. 1. A constable's prison; a lockup, watch-house, or station house.
2. 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. 3. A house for locomotive engines, built circularly around a turntable.