whistle

US /ˈwɪs.əl/
UK /ˈwɪs.əl/
"whistle" picture
1.

a clear, high-pitched sound made by forcing breath through a small hole between partly closed lips, or through a device that produces such a sound

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He let out a loud whistle to get their attention.
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The referee blew his whistle to signal the end of the game.
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pipetoothootsquealshriek
1.

to make a clear, high-pitched sound by forcing breath through a small hole between partly closed lips, or through a device that produces such a sound

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He began to whistle a cheerful tune as he walked.
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The train whistled as it approached the station.
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pipetoothootsquealshriek
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penny whistledog whistleblow the whistle onwhistle in the dark(as) clean as a whistlewet your whistle