A powerful and warlike confederacy of Indian tribes, formerly inhabiting Central New York and constituting most of the Five Nations. Also, any Indian of the Iroquois tribes. [1913 Webster]
iroquois, n. & adj.
--n. (pl. same)
1 a an American Indian confederacy of five peoples formerly inhabiting New York State. b a member of any of these peoples.
2 any of the languages of these peoples.
--adj. of or relating to the Iroquois or their languages.