MOTORING is a 8 letter word that starts with M.

1. \Mo"tor*ing\, n.
   Act or recreation of riding in or driving a motor car or
   automobile.
   
   

2. \Mo"tor*ing\, a.
   Pertaining to motor cars or automobiles, or to the technology
   of such; addicted to riding in or driving automobiles; as,
   motoring parlance; my motoring friend.