hunkpapa: a member of the Siouan people who constituted a division of the Teton Sioux and who formerly lived in the western Dakotas; they were prominent in resisting the white encroachment into the northern Great Plains
person of color: (formal) any non-European non-white person
formalin: a 10% solution of formaldehyde in water; used as a disinfectant or to preserve biological specimens