What is "blown the whistle"

Usage examples of "blown the whistle".

The first target was Lieutenant Commander Phist, a whistle-blower who had blown the whistle on a billion dollar cost overrun, whose Navy career had of course been destroyed by his honesty.

Meanwhile, Anna's aura showed that she mistrusted him, had for some time, yet she hadn't blown the whistle.

I'd run the red at the boulevard intersection and hit the taxi soon afterwards and the policeman who'd blown the whistle could have walkie-talked the network to put a car on me.

That fucking bastard Doug got bored and has blown the whistle on me!

But it is also scientists who, in most such cases, have blown the whistle alerting us to the danger.

He was not really stupid, so it shouldn't take him very long to figure out who had blown the whistle on him.

And what of the Farrell child, who'd first blown the whistle on what was being called the League of Virgins?

He's not really sure, of course, but he thinks Nick Noyes was so angry at the whole thing, and so sure Hub had left with Miss Petersen, that if he thought John had any part in it, he would have blown the whistle.