A wheelbarrow is something you use in the garden or on a building site to move things around that are too heavy to carry yourself. They have handles at one end to push and a wheel at the other end. Wheelbarrows only have one wheel so they are easy to steer, and so you can tip them up and drop whatever is in the wheelbarrow into a pile on the ground. Wheelbarrows are very good for moving dirt, soil and gravel.