steam whistle

Seven o'clock in the morning is too early for any rational human being to be herded into a factory at the call of a steam whistle.

Then he paraded the Harvest Moon the length of Portate's water-front, tooting his steam whistle.

In the meantime, he had much to do and drove his men hard, until a steam-whistle hooted and they threw down their tools.

In the following year came Stephenson's steam whistle; and in the year following came the McCormick reaper.

The sailors were clearing the decks above me; at intervals the steam whistle sounded; we were preparing to get under way.