The Collaborative International Dictionary of English v.0.48:

Contredanse \Con"tre*danse`\, n. [Cf. F. contredanse (fr. E.
   Country-dance). ]
   1.
      (a) A dance in which the partners are arranged face to
          face, or in opposite lines.
      (b) The quadrille. [Obs.]
          [Webster 1913 Suppl.]

   2. (Music) A piece of music in the rhythm of such a dance.
      [Webster 1913 Suppl.]

WordNet (r) 3.0 (2006):

contredanse
    n 1: a type of folk dance in which couples are arranged in sets
         or face one another in a line [syn: country-dance,
         country dancing, contredanse, contra danse,
         contradance]
    v 1: perform a contradance [syn: contradance, country-dance,
         contredanse, contra danse]