whistling

definition: the act of whistling a tune
example: Their cheerful whistling indicated that they enjoyed their work.
speech part: noun
synonyms:
definition: the act of signalling (e.g., summoning) by whistling or blowing a whistle
example:
speech part: noun
synonyms: whistle
definition: the sound made by something moving rapidly or by steam coming out of a small aperture
example:
speech part: noun
synonyms: whistle
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