From The Collaborative International Dictionary of English v.0.48 [gcide]:
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]
From WordNet (r) 3.0 (2006) [wn]:
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