whistle down the wind

The phrase "whistle down the wind" is an idiomatic expression that means to abandon or let go of something, often to avoid being caught or discovered. It suggests quietly and discreetly releasing a secret, hiding or discarding evidence, or distancing oneself from a situation by not attracting attention. The image of "whistling" represents a carefree and casual act, while "down the wind" implies the act of letting something dissipate or be carried away, as if on the breeze.