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Yellowstone Falls
Yellowstone Falls pl n (Placename) a waterfall in NW Wyoming, in Yellowstone National Park on the Yellowstone River Yel′lowstone Falls′ n.pl. two waterfalls of the Yellowstone River, in Yellowstone National Park: upper falls, 109 ft. (33 m) high; lower falls, 308 ft. (94 m) high. |