Source : Webster's Revised Unabridged Dictionary (1913)

Fandango \Fan*dan"go\, n.; pl. {Fandangoes}. [Sp. A name
   brought, together with the dance, from the West Indies to
   Spain.]
   1. A lively dance, in 3-8 or 6-8 time, much practiced in
      Spain and Spanish America. Also, the tune to which it is
      danced.

   2. A ball or general dance, as in Mexico. [Colloq.]

Source : WordNet®

fandango
     n : a provocative Spanish courtship dance in triple time;
         performed by a man and a woman playing castanets