Breton n 1: a native or inhabitant of Brittany (especially one who speaks the Breton language) 2: a Celtic language of Brittany
Breton \Bret"on\, a. [F. breton.] Of or relating to Brittany, or Bretagne, in France. -- n. A native or inhabitant of Brittany, or Bretagne, in France; also, the ancient language of Brittany; Armorican. [1913 Webster]