Keening

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.

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

The horror movie was accompanied by a soundtrack of keening voices, adding to the creepy atmosphere.

The widow sat alone in her empty house, keening softly for the husband she had lost.

The ancient ritual involved participants keening together to honor their ancestors.

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