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

The keening shriek of the fireworks lit up the night sky.

The scientist dedicated countless hours to research, driven by a keening curiosity to unlock the mysteries of the universe.

The old television emitted a high-pitched keening noise whenever it was turned on.