au·to·mo·bile (ô?t?-m?-b?l?, -m??b?l?)n. A self-propelled passenger vehicle that usually has four wheels and an internal-combustion engine, used for land transport. Also called motorcar.adj. Of or relating to automobiles; automotive.[French : Greek auto-, auto- + French mobile, mobile (from Old French; see mobile).]au?to·mo·bil?ist n.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.automobile (???t?m??bi?l) n (Automotive Engineering) another word (esp US) for car1 automobilist nCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014au?to?mo?bile (?? t? m??bil, ?? t? m??bil) n. 1. a passenger vehicle designed for operation on ordinary roads and typically having four wheels and a gasoline or diesel internal-combustion engine. adj. 2. automotive. [1865?70;