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English definition of “whistle”

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whistle

verb
 
 
/ˈwɪsl/
MOUTH [I, T] B2 to make a sound by breathing air out through a small hole made with your lips or through a whistle: Someone whistled at her as she walked past.Playing musicSinging in generalSounds made by humans with their mouths
WIND [I] to produce a sound when air passes through a narrow space: He could hear the wind whistling through the trees.Sounds made by objects, movement or impact
(Definition of whistle verb from the Cambridge Learners Dictionary © Cambridge University Press)
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