The Collaborative International Dictionary of English v.0.48:

Wheelbarrow \Wheel"bar`row\, n.
   A light vehicle for conveying small loads. It has two handles
   and one wheel, and is rolled by a single person.
   [1913 Webster]

WordNet (r) 3.0 (2006):

wheelbarrow
    n 1: a cart for carrying small loads; has handles and one or
         more wheels [syn: barrow, garden cart, lawn cart,
         wheelbarrow]
    v 1: transport in a wheelbarrow