To make a kind of musical sound, or series of sounds, by forcing the breath through a small orifice formed by contracting the lips; also, to emit a similar sound, or series of notes, from the mouth or beak, as birds.

To make a shrill sound with a wind or steam instrument, somewhat like that made with the lips; to blow a sharp, shrill tone.

To sound shrill, or like a pipe; to make a sharp, shrill sound; as, a bullet whistles through the air.

"fischio"

Whistle was a 1980s rap group, consisting of Jazzy Jazz, Kool Doobie, Kraze and DJ Silver Spinner.

To form, utter, or modulate by whistling; as, to whistle a tune or an air.

utter or express by whistling; "She whistled a melody"

Whistle is a supporter's pressure group, created by fans of West Ham United that were critical of its Chairman, Terry Brown, following the clubs relegation in 2003 and the subsequent sale of many of their top players. In April 2004, the group published a dossier accusing the board of financial incompetence, and asking 180 questions regarding the club's finances. Whistle claimed that around £20m had been pledged to them by anonymous investors willing to buy into the club via a share issue if major lenders could force Brown to step down.

Backstage whistles were originally used to give instructions to the sailors who (because they knew the best knots) had the job of operating the theatre's flying system. Nowadays, whistling is forbidden backstage because it might result in a lost sailor cutting a rope and dropping something on somebody.

Whistle (1978), a novel by James Jones, tells the story of four wounded South Pacific veterans brought back by hospital ship to the United States during World War II. Much of the story takes place in a veterans hospital in the fictional city of Luxor, Tennessee.

an inexpensive fipple flute

A mild high pitched, shrieking noise.

a very good emergency item -- especially for children, who may be frightened by strange noises at night

To send, signal, or call by a whistle.

the act of signalling (e.g., summoning) by whistling or blowing a whistle; "the whistle signalled the end of the game"

give a signal by whistling; "She whistled for her maid"

move, send, or bring as if by whistling; "Her optimism whistled away these worries"

a smart item to bring along on an unfamiliar trail

a superb safety warning

wipe wish

a simple device" notes Chapman, "no moving parts

a simple-looking device, but making it is a more complex process than might be expected

a poor substitute, but is better than nothing

The mouth and throat; -- so called as being the organs of whistling.

a car wash place that I would recommend you go if you are in need of having your car detailed