Source : Webster's Revised Unabridged Dictionary (1913)

Shingle \Shin"gle\, v. t. [imp. &. p. p. {Shingled}; p. pr. &
   vb. n. {Shingling}.]
   1. To cover with shingles; as, to shingle a roof.

            They shingle their houses with it.    --Evelyn.

   2. To cut, as hair, so that the ends are evenly exposed all
      over the head, as shingles on a roof.

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.

Source : WordNet®

shingling
     n 1: (geology) sediment in which flat pebbles are uniformly
          tilted in the same direction
     2: the laying on of shingles; "shingling is a draft very
        different from carpentry"