ADJ [ADJ n] (船)轮渡式的，滚装滚卸的，允许车辆开上开下的 A roll-on roll-off ship is designed so that cars and lorries can drive on at one end before the ship sails, and then drive off at the other end after the journey. (船)轮渡式的，滚装滚卸的，允许车辆开上开下的 [British]