Pūd'dling, n.
n. 1. (Civil Engin.) The act of rendering impervious to water by means of clay, as a canal. Gwill.
Sense 2. (Metal.) The decarbonization of cast iron; the process of converting cast iron into wrought or malleable iron, by subjecting it to the continued action of intense heat in a reverberatory furnace, with frequent stirring, so as to free it from impurities, as carbon, silica, &c.
Puddling furnace, a reverberatory furnace in which cast iron is converted into wrought iron or steel by decarbonization.