Keening

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

The keening wail of the baby echoed through the nursery, causing concern among the caregivers.

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

As the fog rolled in, a keening foghorn warned ships of the treacherous rocks ahead.

The singer's voice soared in a beautiful keening note, captivating the audience.

The scientist dedicated countless hours to research, driven by a keening curiosity to unlock the mysteries of the universe.

The chilling keening of the banshee sent shivers down the spines of those who heard it.