Blue Ridge Mountains also Blue Ridge A range of the Appalachian Mountains extending from southern Pennsylvania to northern Georgia. The range rises to 2,038 m (6,684 ft) at Mount Mitchell in the Black Mountains of western North Carolina.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.Blue? Ridge? n. a mountain range extending SW from N Virginia to N Georgia: part of the Appalachian Mountains. Also called Blue? Ridge` Moun?tains. Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.