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.
      
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            A robin . . . was piping a few querulous notes. --W.
                                                  Irving.
      
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   2. (Naut.) To call or direct, as a crew, by the boatswain's
      whistle.
      
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            As fine a ship's company as was ever piped aloft.
                                                  --Marryat.
      
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   3. To furnish or equip with pipes; as, to pipe an engine, or
      a building.
      
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Piping \Pip"ing\, n.
   1. A small cord covered with cloth, -- used as trimming for
      women's dresses.
      
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   2. Pipes, collectively; as, the piping of a house.
      
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   3. The act of playing on a pipe; the shrill noted of birds,
      etc.
      
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   4. A piece cut off to be set or planted; a cutting; also,
      propagation by cuttings.
      
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 Pipistrel

Piping \Pip"ing\ (p[imac]p"[i^]ng), a. [From {Pipe}, v.]
   1. Playing on a musical pipe. "Lowing herds and piping
      swains." --Swift.
      
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   2. Peaceful; favorable to, or characterized by, the music of
      the pipe rather than of the drum and fife. --Shak.
      
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   3. Emitting a high, shrill sound.
      
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   4. Simmering; boiling; sizzling; hissing; -- from the sound
      of boiling fluids.
      
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   {Piping crow}, {Piping crow shrike}, {Piping roller} (Zool.),
      any Australian bird of the genus {Gymnorhina}, esp.
      {Gymnorhina tibicen}, which is black and white, and the
      size of a small crow. Called also {caruck}.

   {Piping frog} (Zool.), 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.
      
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high-pitched \high-pitched\ adj.
   1. high in pitch or frequency; -- used of sounds and voices.
      Opposite of {low}. [Narrower terms: {adenoidal, pinched,  nasal}; {altissimo}; {alto}; {countertenor, alto};
      {falsetto}; {peaky, spiky}; {piping}; {shrill, sharp};
      {screaky, screechy, squeaking, squeaky, squealing};
      {soprano, treble}; {sopranino}; {tenor}]

   Syn: high.
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   2. set at a sharp or high angle or slant; as, a high-pitched
      roof.

   Syn: steeply pitched, steep.
        [WordNet 1.5] high-power