Shingling

Part of speech: noun (n.)

1. The act of covering with shingles; shingles, collectively; a covering made of shingles.

2. The process of expelling scoriæ and other impurities by hammering and squeezing, in the production of wrought iron. Shingling hammer, a ponderous hammer moved by machinery, used in shingling puddled iron. -- Shingling mill, a mill or forge where puddled iron is shingled.