Keening

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

The old man sat by the grave, keening softly for his departed wife.

The haunting sound of keening filled the air as the people paid their respects to the fallen soldiers.

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

The chilling keening of the banshee sent shivers down the spines of those who heard it.