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.

The keening notes of the bagpipes resonated through the air during the memorial ceremony.

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

The young child stood by the graveside, keening for his pet dog that had passed away.

The old television emitted a high-pitched keening noise whenever it was turned on.

The keening tone of his voice conveyed the depth of his heartbreak.