The Collaborative International Dictionary of English v.0.48:

Barouche \Ba*rouche"\, n. [G. barutsche, It. baroccio, biroccio,
   LL. barrotium, fr. L. birotus two-wheeled; bi- = bis twice +
   rota wheel.]
   A four-wheeled carriage, with a falling top, a seat on the
   outside for the driver, and two double seats on the inside
   arranged so that the sitters on the front seat face those on
   the back seat.
   [1913 Webster]

WordNet (r) 3.0 (2006):

barouche
    n 1: a horse-drawn carriage having four wheels; has an outside
         seat for the driver and facing inside seats for two couples
         and a folding top