steam whistle

English Thesaurus

1. a whistle in which the sound is produced by steam; usually attached to a steam boiler (noun.artifact)

hypernym	:	whistle,
definition	:	acoustic device that forces air or steam against an edge or into a cavity and so produces a loud shrill sound (noun.artifact)

part meronym	:	boiler, steam boiler,
definition	:	sealed vessel where water is converted to steam (noun.artifact)

part meronym	:	calliope, steam organ,
definition	:	a musical instrument consisting of a series of steam whistles played from a keyboard (noun.artifact)