roundhouse
    n 1: workplace consisting of a circular building for repairing
         locomotives
    2: a hook delivered with an exaggerated swing

Roundhouse \Round"house`\, n.
   1. A constable's prison; a lockup, watch-house, or station
      house. [Obs.]
      [1913 Webster]

   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.
          [1913 Webster]

   3. A house for locomotive engines, built circularly around a
      turntable.
      [1913 Webster]