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To produce a clear musical sound by forcing air through the teeth or through an aperture formed by pursing the lips.
(verb-intransitive)
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To produce a clear, shrill, sharp musical sound by blowing on or through a device.
(verb-intransitive)
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To produce a high-pitched sound when moving swiftly through the air: The stone whistled past my head.
(verb-intransitive)
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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.
(verb-intransitive)
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To emit a shrill, sharp, high-pitched cry, as some birds and other animals.
(verb-intransitive)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.