Wordnet 3.0
NOUN (2)
1.
a native or inhabitant of Brittany (especially one who speaks the Breton language);
2.
a Celtic language of Brittany;
The Collaborative International Dictionary of English v.0.48:
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]
WordNet (r) 3.0 (2006):
Breton
n 1: a native or inhabitant of Brittany (especially one who
speaks the Breton language)
2: a Celtic language of Brittany