Wordnet 3.0
NOUN (2)
1.
a member of a warlike group of Algonquians living in the northwestern plains;
2.
any of the Algonquian languages spoken by the Blackfoot;
The Collaborative International Dictionary of English v.0.48:
Blackfoot \Black"foot`\, a.
Of or pertaining to the Blackfeet; as, a Blackfoot Indian. --
n. A Blackfoot Indian.
[1913 Webster]
WordNet (r) 3.0 (2006):
Blackfoot
n 1: a member of a warlike group of Algonquians living in the
northwestern plains
2: any of the Algonquian languages spoken by the Blackfoot