A bale is a bound-up bundle, usually made of hay. When you drive past a farm in the fall, you'll often see bales of hay scattered across the fields.
A bale is a compact, easy-to-move bundle of a crop like hay or cotton. Bales are formed in various shapes by a machine called a baler, and wrapped in twine or wire so they can be efficiently transported or stored. The word bale is Old French for "rolled-up bundle," from the same Germanic root as ball.