Keening

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

The haunting sound of keening echoed through the village as news of the tragedy spread.

The keening mother held her child's lifeless body, overcome with grief.