Keening

The old haunted house echoed with the keening cries of unseen spirits.

The keening smell of rotten eggs filled the kitchen, indicating a gas leak.

The keening smell of rotten eggs indicated a gas leak in the basement.

The lonely lighthouse emitted a keening beam of light that swept across the dark sea.

The sailor set sail with a keening longing for adventure, eager to explore uncharted waters.

The eerie keening of the siren warned the residents of the impending storm.