1. (v. i.) 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.

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

3. (v. i.) To sound shrill, or like a pipe; to make a sharp, shrill sound; as, a bullet whistles through the air.

4. (v. t.) To form, utter, or modulate by whistling; as, to whistle a tune or an air.

5. (v. t.) To send, signal, or call by a whistle.

6. (n.) A sharp, shrill, more or less musical sound, made by forcing the breath through a small orifice of the lips, or through or instrument which gives a similar sound; the sound used by a sportsman in calling his dogs; the shrill note of a bird; as, the sharp whistle of a boy, or of a boatswain's pipe; the blackbird's mellow whistle.

7. (n.) The shrill sound made by wind passing among trees or through crevices, or that made by bullet, or the like, passing rapidly through the air; the shrill noise (much used as a signal, etc.) made by steam or gas escaping through a small orifice, or impinging against the edge of a metallic bell or cup.

8. (n.) An instrument in which gas or steam forced into a cavity, or against a thin edge, produces a sound more or less like that made by one who whistles through the compressed lips; as, a child's whistle; a boatswain's whistle; a steam whistle (see Steam whistle, under Steam).

9. (n.) The mouth and throat; -- so called as being the organs of whistling.

Angelus Angelus bell English horn Klaxon Mayday Pandean pipe SOS air-raid alarm alarm alarm bell alarm clock alarm signal alarum alert all clear anthem assibilation aulos bagpipe ballad basset horn basset oboe bassoon battle cry bay beacon beam beep bell birdcall birdies blare blast blat blinking light blooping blow blow a horn blow the horn blurping boiler factory boiler room bombard boo bray bugle bugle call bull-roarer burglar alarm buzz buzzer cackle call caper caracole carillon carol catcall caterwaul caw chant chatter cheep cherry bomb chirk chirp chirr chirrup chitter choir chorus chuck clack clacker clap hands clapper clarinet clarion cluck cock-a-doodle-doo contrabassoon contrafagotto coo cracker creak cricket croak cromorne cronk croon crostarie crow cuckoo dance delight descant distortion do-re-mi doodle double bassoon double reed double-tongue drum effervesce effervescence effervescing exult fanfare feedback fiery cross fife fipple flute fire alarm fire bell fire flag firecracker five-minute gun fizz fizzle fizzling flageolet flashing light flourish of trumpets flute flutter fluttering fog bell fog signal foghorn frication frictional rustling frisk frolic gabble gaggle gale warning gambol give the bird give the raspberry glory glow gobble groan growl guggle hautboy heckelphone hiss hissing honk hoo hoot hooter horn hornpipe howl howling hue and cry hum hurricane warning hush hushing hymn intonate intone joy jubilate keen last post laugh licorice stick lighthouse lilt lip lisp minstrel moan moose call motorboating murmur musette mutter noisemaker note of alarm oaten reed oboe oboe da caccia ocarina occulting light panpipe peal peep penny-whistle piccolo pip pipe police whistle pommer psalm quack quaver radiate cheer rallying cry rattle rattlebox rebel yell recorder reed reed instrument rejoice reveille revel rhonchus roar roll rollick romp roulade rumble sax saxophone scold scratching screak scream screech serenade shake shawm shredding shriek shrill shush shushing sibilance sibilate sibilation siffle sigh sigmatism signal of distress sing sing in chorus single reed single-reed instrument siren siss sissing sizz sizzle sizzling skip skip for joy skirl