Source : Webster's Revised Unabridged Dictionary (1913)

Trucker \Truck"er\, n.
   One who trucks; a trafficker.

         No man having ever yet driven a saving bargain with
         this great trucker for souls.            --South.

Source : WordNet®

trucker
     n : someone who drives a truck as an occupation [syn: {teamster},
          {truck driver}]