765 ILCS 1050/2.01
"Container" means any can, tub, case, crate, box, bottle, flask, barrel, keg, carton, tank, fountain or vessel, and which is intended for return in the ordinary course of business from the retailer to the distributor, wholesaler, or manufacturer of the product contained therein.
(from Ch. 140, par. 122.1)
(Source: P.A. 80-1449.)