au·to·mo·bile 
(ô′tə-mō-bēl, -mōbēl′)
(ô′tə-mō-bēl, -mōbēl′)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·bilist n.