Definitions for yellowstoneˈyɛl oʊˌstoʊn
Random House Webster's College Dictionary
a river flowing from NW Wyoming through Yellowstone Lake and NE through Montana into the Missouri River in W North Dakota. 671 mi. (1080 km) long.
Category: Geography (places)
Yellowstone, Yellowstone River(noun)
a tributary of the Missouri River that flows through the Yellowstone National Park
A national park of the USA, located in Montana, Idaho and Wyoming
A nickname for the 2-8-8-4 train configuration.