cargo liner noun2 •A cargo ship in liner service which carries a small number of passengers, typically limited to 12 to avoid the requirement for the ship to carry a doctor. •A lining for an aircraft's cargo hold; a lining for automotive interior wayback spaces or boots (trunks).United Air Lines has chosen Gilliner 1066—a tough, durable, lightweight fiberglas polyester laminate—to line the cargo compartments of its fleet of cargo aircraft. — 1962 formscargo liners