Keening

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

The refugee glanced back at his war-torn homeland with keening eyes, filled with longing for a peaceful life.

The patient lay in the hospital bed, his keening thoughts consumed by the desire to be healthy again.

The lonely lighthouse emitted a keening beam of light that swept across the dark sea.

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