n. The process of removing incrustations of salt and other foreign matters from the inner surface of boilers.n. In metal-working, the first process in making tin-plate, in which the plates are placed in a bath of dilute muriatic acid and then heated in a scaling-furnace to remove the scale.n. The act or process of removing the scales of fish.Liable to rub the scales off fish, as some nets.n. The process of adjusting sights to the guns on board of a ship.n. Scales collectively or the arrangement of scales, as on an insect's wing or on a fish.n. Specifically, the structure and distribution of the scales of fishes considered as a basis for classification.n. In dentistry, removing the tartar from the teeth.n. The measurement or estimation of the amount of lumber in logs or standing timber.n. The taking of dimensions from a drawing by means of a measuring-scale, in the absence of figured dimensions.