Keening

The keening whistle of the teapot signaled that the water was boiling.

The keening sound of the ambulance siren signaled a tragedy unfolding on the streets.

As the fog rolled in, a keening foghorn warned ships of the treacherous rocks ahead.

The distant keening of the siren warned of an approaching storm.

The traditional keening brought tears to the eyes of all those who listened, capturing the pain of loss in its rawest form.

The keening sound of the ambulance siren pierced through the busy city streets.