Keening

The keening sound of the ambulance pierced through the silence of the night.

The keening whistle of the tea kettle signaled that the water had boiled.

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

The old haunted house echoed with the keening cries of unseen spirits.

The abandoned graveyard was filled with the keening of the wind passing through the tombstones.