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 mourners joined in a collective keening, their voices blending in a sorrowful chorus that echoed through the valley.

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.