He was still looking at the technician, and seemed to receive some silent signal, relaxed further.

She nodded vigorously to them, a silent signal that they must pay attention.

At some silent signal, they turned and loped back into the forest.

The woman smiled at him, then made a silent signal to the wolf.

It had been her mother's silent I'll tell you later signal for years.

I tried to give her a silent signal to be quiet, but she ignored me.

At a silent signal from the red, the searching stopped.

She didn't answer but pointed to the roof, a silent signal of her intentions.

Just in case, however, each participant carries a radio that gives off a silent signal.

It was a silent signal from their days in Medusa.