whistle

(hwĭsˈəl, wĭsˈ-)

1. To produce a clear musical sound by forcing air through the teeth or through an aperture formed by pursing the lips.
2. To produce a clear, shrill, sharp musical sound by blowing on or through a device.
3. a. To produce a high-pitched sound when moving swiftly through the air: The stone whistled past my head.
   b. To produce a high-pitched sound by the rapid movement of air through an opening or past an obstruction: Wind whistled through the cracks in the windows.
4. To emit a shrill, sharp, high-pitched cry, as some birds and other animals.

1. To produce by whistling: whistle a tune.
2. To summon, signal, or direct by whistling.
3. To cause to move with a whistling noise.

1. a. A small wind instrument for making whistling sounds by means of the breath.
   b. A device for making whistling sounds by means of forced air or steam: a factory whistle.
2. A sound produced by a whistling device or by whistling through the lips.
3. A whistling sound, as of an animal or a projectile.
4. The act of whistling.
5. A whistling sound used to summon or command.