Keening

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

The eerie keening of the ghostly apparition sent shivers down their spines.

The piercing sound of keening could be heard from miles away, signaling the loss of a respected community leader.

The keening smell of rotten eggs filled the kitchen, indicating a gas leak.

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