Keening

The keening whistle of the tea kettle signaled that the water had boiled.

The keening wail of the baby echoed through the nursery, causing concern among the caregivers.

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 aroma of freshly baked bread wafted through the bakery.