What is another word for steam whistle?
Pronunciation: [stˈiːm wˈɪsə͡l] (IPA) 
A steam whistle is an audible device that produces a loud sound by using steam as its primary source of power. Although the term "steam whistle" is widely used, there are other synonyms that can be used to describe this device, such as steam horn, steam siren, steam trumpet, or steam whistle horn. These terms are commonly used interchangeably, and they refer to a device that produces a loud, high-pitched sound using steam as an energy source. Whether used on a locomotive or in an industrial setting, steam whistles have long been used to signal warnings, regulation, or emergencies, and are an iconic part of industrial history.
