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off-roador off·road (ôf′rōd′, ŏf′-)
Existing, taking place, or designed for use off paved or public roads or in rugged terrain: off-road sports such as snowmobiling.
off′-road′, off′road′ adv.
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.
(Automotive Engineering) (of a motor vehicle) designed or built for use away from public roads, esp on rough terrain
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
designed, built, or used for traveling off public roads, esp. on unpaved roads or rough terrain.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.