Keening

The keening whistle of the tea kettle signaled that the water had boiled.

The keening screech of the brakes startled the pedestrians on the busy street.

The keening whistle of the teapot signaled that the water was boiling.

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

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 sound of the foghorn guided ships safely through the thick mist.

The old television emitted a high-pitched keening noise whenever it was turned on.