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.

The abandoned puppy let out a keening howl, desperately yearning for someone to rescue it.

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

The wounded animal emitted a keening cry, pleading for help.

The keening howls of the wolf pierced the silence of the night.

The keening smell of rotten eggs filled the kitchen, indicating a gas leak.

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