oglala: a member of the Siouan people who constituted a division of the Teton Sioux and who formerly inhabited the Black Hills of western South Dakota
teton: a member of the large western branch of Sioux people which was made up of several groups that lived on the plains
discovery: (law) compulsory pretrial disclosure of documents relevant to a case; enables one side in a litigation to elicit information from the other side concerning the facts in the case