Wiktionary
blew the whistle
vb. (en-simple pastblow the whistle)
Usage examples of "blew the whistle".
Bob, and then he blew the whistle himself, just to show how happy he was.
Surveying the sky, he blew the whistle that made no sound, the one that hung from his neck, and shortly a small, bright yellow bird lit with a flutter upon his finger.
Waddell blew the whistle and they ran in random directions, not one of them particularly athletically inclined, but with lots of dig.
As he backed, he blew the whistle until his face reddened and his ears grew hot with rushing blood.
Again Tristan blew the whistle, the one that always brought the stallion running.
Thornburg blew the whistle, in acknowledgment, backed the steamer out, and made for it.