Keening

The keening stench of decay emanated from the garbage dumpster, making it difficult to pass by.

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

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