whistling

nouns

the sound made by something moving rapidly or by steam coming out of a small aperture

whistle, whistling

is derived from

is derived from

the act of whistling a tune

"his cheerful whistling indicated that he enjoyed his work"

whistling

is derived from

is a type of (narrower)

musical activity (singing or whistling etc.)

"his music was his central interest"

the act of signalling (e.g., summoning) by whistling or blowing a whistle

"the whistle signalled the end of the game"

whistle, whistling

is derived from