Akademik

whistling
noun
1. the sound made by something moving rapidly or by steam coming out of a small aperture (Freq. 1)
Syn: ↑whistle
Derivationally related forms: ↑whistle, ↑whistle (for: ↑whistle)
Hypernyms: ↑sound
2. the act of whistling a tune (Freq. 1)
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his cheerful whistling indicated that he enjoyed his work

Derivationally related forms: ↑whistle
Hypernyms: ↑music
3. the act of signalling (e.g., summoning) by whistling or blowing a whistle
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the whistle signalled the end of the game

Syn: ↑whistle
Derivationally related forms: ↑whistle, ↑whistle (for: ↑whistle)
Hypernyms: ↑signal, ↑signaling, ↑sign

Useful english dictionary. 2012.