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Rocky Mountains definition

Rocky Mountains

mountain system in W North America, extending from central N.Mex. to N Alas.: over 3,000 mi (4,828 km) long; highest peak, Mt. McKinley

Etymology: transl. < Fr Montaignes Rocheuses

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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