n. . Clothing; that which clothes or covers; a covering.n. In engines:n. The jacket or outer covering of the cylinder, or the covering of hair-felt put on steam-pipes to prevent the radiation of heat. Also called clothing and lagging.n. A timber casing inclosing the boiler of a locomotive engine and the fire-box.n. Any kind of plank covering, such as the slating-boards of a roof, the boards of a floor, the plank lining of a pit-shaft, the planking of a coffer-dam, etc.n. In mining, deal boarding for brattices.n. The wood composing the box of a mine-car.n. The wooden portion of a rope-drum on which the rope is coiled.