whistle
instrument which produces sound from a stream of forced air
Acme siren
musical instrument that sounds like police siren
signalling whistle
any type of whistle or flute used for signalling
dog whistle
whistle that emits sound in the ultrasonic range
steam whistle
device used to produce sound with the aid of live steam, which acts as a vibrating system
boatswain's call
pipe or a non-diaphragm type whistle used on naval ships by a boatswain
pea whistle
small whistle which produces a trill sound as air passes over a small ball or dowel rod placed inside it