Pronunciation: (yangk'tun), [key]
—pl. -tons, (esp. collectively) -ton for 1.
1. a member of one of two tribes of Dakota Indian people who inhabited the northern Great Plains in the 18th and 19th centuries. Cf. Yanktonai.
2. a town in SE South Dakota. 12,011.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.