[n] an inexpensive fipple flute
[n] acoustic device that forces air or steam against an edge or into a cavity and so produces a loud shrill sound
[n] the act of signalling (e.g., summoning) by whistling or blowing a whistle; "the whistle signalled the end of the game"
[n] the sound made by something moving rapidly or by steam coming out of a small aperture
[v] utter or express by whistling; "She whistled a melody"
[v] give a signal by whistling; "She whistled for her maid"
[v] make a whining, ringing, or whistling sound; "the kettle was singing"; "the bullet sang past his ear"
[v] move with, or as with, a whistling sound; "The bullets whistled past him"
[v] move, send, or bring as if by whistling; "Her optimism whistled away these worries"
[v] make whistling sounds; "He lay there, snoring and whistling"