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

The character in the horror movie let out a keening scream that sent chills down the audience's spine.

The keening voices of the choir brought tears to the audience's eyes.