whistle-blow

His daughter is crossing the street, holding his hand, when he hears a whistle blow—loud, mournful, insistent.

I worked seventeen years in them mills, an' I've took notice that most of the accidents happens just before whistle-blow.

I used to pusha de peanut cart—make de whistle blow—hot peanuts.

When you hear the whistle blow, he said, jump overboard, for in an instant afterward the boat will be in atoms.

At the first shot this morning I heard no whistle blow, but it was sounded at the second and third.

I sat on the front steps here until I heard the whistle blow.