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 old graveyard was filled with the sound of keening voices as mourners gathered to pay their respects.

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

As the funeral procession passed by, the sound of keening echoed through the streets.