Niobrara River
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Ni·o·brar·a River
(nī′ə-brâr′ə) A river, about 700 km (430 mi) long, rising in eastern Wyoming and flowing generally eastward to the Missouri River in northeast Nebraska.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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Noun | 1. | Niobrara River - a tributary of the Missouri River U.S.A., United States, United States of America, US, USA, America, the States, U.S. - North American republic containing 50 states - 48 conterminous states in North America plus Alaska in northwest North America and the Hawaiian Islands in the Pacific Ocean; achieved independence in 1776 |
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