geographical name Yel·low·stone \ˈye-lō-ˌstōn\

Definition of Yellowstone

  1. river 671 miles (1080 kilometers) long in northwestern Wyoming and southern and eastern Montana flowing north through Yellowstone Lake (area 140 square miles, or 364 square kilometers) and the Grand Canyon of the Yellowstone in Yellowstone National Park and northeast into the Missouri River in northwestern North Dakota near the border with Montana

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