The Collaborative International Dictionary of English v.0.48:

Gavot \Gav"ot\, Gavotte \Gav"otte\(? or ?; 277), n. [F. gavotte,
   fr. Gavots, a people inhabiting a mountainous district in
   France, called Gap.] (Mus.)
   A kind of difficult, old formal French dance in quadruple
   time. [WordNet sense 1]
   [1913 Webster + WordNet 1.5]

   2. Music composed in quadruple time for dancing the gavotte,
      having a dance tune which has two brisk and lively, yet
      dignified, strains in common time, each played twice over.
      [WordNet sense 2]
      [1913 Webster + WordNet 1.5]

WordNet (r) 3.0 (2006):

gavotte
    n 1: an old formal French dance in quadruple time
    2: music composed in quadruple time for dancing the gavotte