The Collaborative International Dictionary
Shingling hammer
Shingling \Shin"gling\, n.
The act of covering with shingles; shingles, collectively; a covering made of shingles.
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(Metal) The process of expelling scori[ae] 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.