Wheelbarrow

Single-wheeled barrow for moving earth, stone, or dung by hand.

A wooden tray on two handles with a single wheel at the front, letting one person move a load that two could not carry. Barrows do the unglamorous work of every building site, mine, and farmyard — earth, stone, dung, mortar. The wheel takes most of the weight and the person takes the balance, which is a knack that looks like nothing until someone without it tips a full barrow into the mud.