Whistle

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.

Read more about Whistle:  History, Types of Whistle, Whistle Physics, Patents and Inventors

Famous quotes containing the word whistle:

    I do not know whether there be, as a rule, more vocal expression of the sentiment of love between a man and a woman, than there is between two thrushes. They whistle and call to each other, guided by instinct rather than by reason.
    Anthony Trollope (1815–1882)

    Discourse on virtue and they pass by in droves, whistle and dance the shimmy, and you’ve got an audience.
    Diogenes of Sinope (c. 410–320 B.C.)

    The bud of the apple is desire, the down-falling gold,
    The catbird’s gobble in the morning half-awake
    These are real only if I make them so. Whistle
    For me, grow green for me and, as you whistle and grow green,
    Intangible arrows quiver and stick in the skin
    And I taste at the root of the tongue the unreal of what is real.
    Wallace Stevens (1879–1955)