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 keening aroma of freshly baked bread wafted through the bakery.

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

The haunting melody of the keening bagpipes played at the memorial service brought a sense of solemnity to the occasion.