Source : Webster's Revised Unabridged Dictionary (1913)

Shingling \Shin"gling\, n.
   1. The act of covering with shingles; shingles, collectively;
      a covering made of shingles.

   2. (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.