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.

Piping \Pip"ing\, n.
   1. A small cord covered with cloth, -- used as trimming for
      women's dresses.

   2. Pipes, collectively; as, the piping of a house.

   3. The act of playing on a pipe; the shrill noted of birds,
      etc.

   4. A piece cut off to be set or planted; a cutting; also,
      propagation by cuttings.

Piping \Pip"ing\ (p[imac]p"[i^]ng), a. [From {Pipe}, v.]
   1. Playing on a musical pipe. ``Lowing herds and piping
      swains.'' --Swift.

   2. Peaceful; favorable to, or characterized by, the music of
      the pipe rather than of the drum and fife. --Shak.

   3. Emitting a high, shrill sound.

   4. Simmering; boiling; sizzling; hissing; -- from the sound
      of boiling fluids.

   {Piping crow}, {Piping crow shrike}, {Piping roller}
      (Zo["o]l.), any Australian bird of the genus {Gymnorhina},
      esp. {G. tibicen}, which is black and white, and the size
      of a small crow. Called also {caruck}.

   {Piping frog} (Zo["o]l.), a small American tree frog ({Hyla
      Pickeringii}) which utters a high, shrill note in early
      spring.

   {Piping hot}, boiling hot; hissing hot; very hot. [Colloq.]
      --Milton.

Source : WordNet®

piping
     adj : resembling the music of a pipe; "the piping voices of
           children"

piping
     n 1: a thin strip of covered cord used to edge hems
     2: a long tube made of metal or plastic that is used to carry
        water or oil or gas etc. [syn: {pipe}, {pipage}]
     3: playing a pipe or the bagpipes

piping
     adv : (used of heat) extremely; "the casserole was piping hot"
           [syn: {steaming}]

Source : Free On-Line Dictionary of Computing

piping
     
        {pipe}