Source : Webster's Revised Unabridged Dictionary (1913)

Basque \Basque\, a. [F.]
   Pertaining to Biscay, its people, or their language.

Basque \Basque\, n. [F.]
   1. One of a race, of unknown origin, inhabiting a region on
      the Bay of Biscay in Spain and France.

   2. The language spoken by the Basque people.

   3. A part of a lady's dress, resembling a jacket with a short
      skirt; -- probably so called because this fashion of dress
      came from the Basques.

Source : WordNet®

Basque
     n 1: a member of a people of unknown origin living in the western
          Pyrenees in France and Spain
     2: the language of the Basque people; of no known relation to
        any other language