Source : Webster's Revised Unabridged Dictionary (1913)

Pipe \Pipe\, v. t. [imp. & p. p. {Piped}; p. pr. & vb. n.
   {Piping}.]
   1. To perform, as a tune, by playing on a pipe, flute, fife,
      etc.; to utter in the shrill tone of a pipe.

            A robin . . . was piping a few querulous notes. --W.
                                                  Irving.

   2. (Naut.) To call or direct, as a crew, by the boatswain's
      whistle.

            As fine a ship's company as was ever piped aloft.
                                                  --Marryat.

   3. To furnish or equip with pipes; as, to pipe an engine, or
      a building.

Piped \Piped\, a.
   Formed with a pipe; having pipe or pipes; tubular.