There was a thunder of stamping from the impatient crews inside the lorry followed by loud whistles.

Or heard loud whistles, on people talking?

With a few whacks and some loud whistles, they drive the donkeys out of the enclosure.

We'll approach on foot and when we're within range I'll give out two loud whistles.

The voice is a series of loud whistles that rise and fall in pitch.

That afternoon, the loud whistles from the coal engines deafened the city's downtown.

Warnings are given, by emitting a series of loud whistles, after which members of the colony may be seen running for cover.

There were loud whistles and boos at this, and more banging of the gavel.

Her appearance was greeted by several loud whistles from the older boys in the crowd.

The audience responds with loud whistles and cheers.