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 cries of the wounded soldier could be heard from the battlefield.

The air raid siren's keening pierced through the city, signaling imminent danger.

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

The women gathered in the cemetery, their voices intertwining in a mournful keening that honored the departed.