nuclease: general term for enzymes that catalyze the hydrolysis of nucleic acid by cleaving chains of nucleotides into smaller units
enzyme: any of several complex proteins that are produced by cells and act as catalysts in specific biochemical reactions
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