steam whistle

An array of steam whistles arranged to play music is referred to as a calliope.

Three Folk stood upright from the grass, and screamed like steam whistles.

The point is named for the sound the steam whistles would make when signaling loggers.

Older steam whistles were almost always actuated with a pull cord.

Other cries followed, sounding more like steam whistles than anything made by a living throat.

The quality of steam on which steam whistles are blown is variable and may affect frequency.

When the dam was completed, giant steam whistles blew for one hour, signaling to people in the valley to evacuate immediately.

"The first two intrusions came with steam whistles and the roar of a locomotive," explained Chase.

Five steam whistles are mounted atop the clock case.

Spring safety valves and steam whistles are other common features of model steam engines.