Shingling hammer, a ponderous hammer moved by machinery, used in shingling puddled iron. -- Shingling mill, a mill or forge where puddled iron is shingled.
The act of covering with shingles; shingles, collectively; a covering made of shingles. [1913 Webster]
The process of expelling scoriæ and other impurities by hammering and squeezing, in the production of wrought iron. [1913 Webster]