A whistle or call is a simple aerophone, an instrument which produces sound from a stream of forced air. It may be mouth-operated, or powered by air pressure, steam, or other means. Whistles vary in size from a small slide whistle or nose flute type to a large multi-piped church organ.

Contents

• 1 History
• 2 Types of whistle
• 3 Whistle physics
• 4 Fields and usages
  • 4.1 Police whistles
  • 4.2 Industrial whistles
  • 4.3 Boats
  • 4.4 Trains
  • 4.5 Sporting
  • 4.6 Music
  • 4.7 Military
  • 4.8 Others
• 5 Patents and inventors
• 6 References
• 7 External links

History

The whistle has its roots dating back to ancient China, where night watchmen would blow into the tops of acorns to alert the towns to invading Mongolians.

Noun

whistle (plural whistles)

1. A device designed to be placed in the mouth in order to make a whistling sound.
2. An act of whistling.
3. A shrill, high-pitched sound made by whistling.
4. Any high-pitched sound similar to the sound made by whistling.
5. (Cockney rhyming slang) A suit (from whistle and flute).
   • 2005, Wally Payne, A Minority of One: A Monkey's Tale Continued

     We soldiers changed into our No.1 dress uniforms, Sid into his best whistle and we set off for the church.

Derived terms Terms derived from the noun whistle

• bells and whistles
• clean as a whistle‎
• it's not the whistle that pulls the train

• wet one's whistle
• whistle-blower
• whistle pig

• whistle-stop
• whistle walk

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Arts: Music: Styles: R: Regional and Ethnic ...
Aug 27, 2009 ... Banshee in the Kitchen - California-base d trio playing mostly Irish music on fiddle, flutes, hammered dulcimer, whistle , accordion, bouzouki ...

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Whistles - Project
Jan 2, 2007 ... Big Whistle Music - Shop with range of whistles , music, tutor books and other Celtic instruments. Includes a review of the major whistle ...