whistle definition

1. the sound made by something moving rapidly or by steam coming out of a small aperture
2. the act of signalling (e.g., summoning) by whistling or blowing a whistle
• examples: the whistle signalled the end of the game
3. a small wind instrument that produces a whistling sound by blowing into it
4. acoustic device that forces air or steam against an edge or into a cavity and so produces a loud shrill sound
5. make whistling sounds
• examples: He lay there, snoring and whistling
6. move with, or as with, a whistling sound
• examples: The bullets whistled past him
7. utter or express by whistling
• examples: She whistled a melody
8. move, send, or bring as if by whistling
• examples: Her optimism whistled away these worries
9. make a whining, ringing, or whistling sound
• examples: the kettle was singing
• examples: the bullet sang past his ear
10. give a signal by whistling
• examples: She whistled for her maid