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 ancient ritual involved participants keening together to honor their ancestors.

The keening shriek of the fireworks lit up the night sky.

The character in the horror movie let out a keening scream that sent chills down the audience's spine.

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