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.

As the casket was lowered into the ground, the mourners erupted in heart-wrenching keening, expressing their sorrow.

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.