from The American Heritage® Dictionary of the English Language, 4th Edition
- A river, about 1,080 km (671 mi) long, of northwest Wyoming and southern and eastern Montana. It flows northward through Yellowstone Lake and Yellowstone National Park then east and northeast to the Missouri River. The park includes numerous geysers, including Old Faithful.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- proper n. A national park of the USA, located in Montana, Idaho and Wyoming
- proper n. A nickname for the 2-8-8-4 train configuration.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a tributary of the Missouri River that flows through the Yellowstone National Park
Sorry, no etymologies found.