Merriam-Webster's Collegiate® Dictionary, 11th Edition
WAGON
I. noun see: wain
Date: 15th century
1. a usually four-wheeled vehicle for transporting bulky commodities and drawn originally by animals, a lighter typically horse-drawn vehicle for transporting goods or passengers, paddy wagon , a railway freight car, a low four-wheeled vehicle with an open rectangular body and a retroflex tongue made for the play or use of a child, a small wheeled table used for the service of a dining room , a delivery truck , station wagon ,
II. verb
Date: 1606
intransitive verb to travel or transport goods by wagon, transitive verb to transport (goods) by wagon