The Collaborative International Dictionary of English v.0.48:

Bouvines \Bouvines\ prop. n.
   The location where in 1214 the French under King Philip
   Augustus defeated a coalition formed against him in one of
   the greatest battles of the middle ages.
   [WordNet 1.5]

WordNet (r) 3.0 (2006):

Bouvines
    n 1: in 1214 the French under Philip Augustus defeated a
         coalition formed against him in one of the greatest battles
         of the middle ages