A truck or lorry is a motor vehicle for transporting goods. The word 'truck' comes from the Greek 'trochos', meaning 'wheel″. Truck, automotive vehicle is designed primarily for the transportation of goods. A truck is constructed on the general lines of the automobile but uses larger and heavier parts. It may be powered by a gasoline internal-combustion engine or a diesel engine. Many trucks have automatic or semiautomatic transmissions.