Keening

The keening screech of the brakes startled the pedestrians on the sidewalk.

The horror movie was accompanied by a soundtrack of keening voices, adding to the creepy atmosphere.

The keening of the steam whistle signaled the departure of the train from the platform.

The widow sat alone in her empty house, keening softly for the husband she had lost.

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