Source : Webster's Revised Unabridged Dictionary (1913)

Whistling \Whis"tling\,
   a. & n. from {Whistle}, v.

   {Whistling buoy}. (Naut.) See under {Buoy}.

   {Whistling coot} (Zo["o]l.), the American black scoter.

   {Whistling Dick}. (Zo["o]l.)
   (a) An Australian shrike thrush ({Colluricincla Selbii}).
   (b) The song thrush. [Prov. Eng.]

   {Whistling duck}. (Zo["o]l.)
   (a) The golden-eye.
   (b) A tree duck.

   {Whistling eagle} (Zo["o]l.), a small Australian eagle
      ({Haliastur sphenurus}); -- called also {whistling hawk},
      and {little swamp eagle}.

   {Whistling plover}. (Zo["o]l.)
   (a) The golden plover.
   (b) The black-bellied, or gray, plover.

   {Whistling snipe} (Zo["o]l.), the American woodcock.

   {Whistling swan}. (Zo["o]l.)
   (a) The European whooper swan; -- called also {wild swan},
       and {elk}.
   (b) An American swan ({Olor columbianus}). See under {Swan}.
       

   {Whistling teal} (Zo["o]l.), a tree duck, as {Dendrocygna
      awsuree} of India.

   {Whistling thrush}. (Zo["o]l.)
   (a) Any one of several species of singing birds of the genus
       {Myiophonus}, native of Asia, Australia, and the East
       Indies. They are generally black, glossed with blue, and
       have a patch of bright blue on each shoulder. Their note
       is a loud and clear whistle.
   (b) The song thrush. [Prov. Eng.]

Buoy \Buoy\, n. [D. boei buoy, fetter, fr. OF. boie, buie,
   chain, fetter, F. bou['e]e a buoy, from L. boia. ``Boiae
   genus vinculorum tam ferreae quam ligneae.'' --Festus. So
   called because chained to its place.] (Naut.)
   A float; esp. a floating object moored to the bottom, to mark
   a channel or to point out the position of something beneath
   the water, as an anchor, shoal, rock, etc.

   {Anchor buoy}, a buoy attached to, or marking the position
      of, an anchor.

   {Bell buoy}, a large buoy on which a bell is mounted, to be
      rung by the motion of the waves.

   {Breeches buoy}. See under {Breeches}.

   {Cable buoy}, an empty cask employed to buoy up the cable in
      rocky anchorage.

   {Can buoy}, a hollow buoy made of sheet or boiler iron,
      usually conical or pear-shaped.

   {Life buoy}, a float intended to support persons who have
      fallen into the water, until a boat can be dispatched to
      save them.

   {Nut} or {Nun buoy}, a buoy large in the middle, and tapering
      nearly to a point at each end.

   {To stream the buoy}, to let the anchor buoy fall by the
      ship's side into the water, before letting go the anchor.
      

   {Whistling buoy}, a buoy fitted with a whistle that is blown
      by the action of the waves.

Source : WordNet®

whistling buoy
     n : a buoy that makes a whistling noise [syn: {whistle buoy}]