The protracted, mournful cry of a dog or a wolf, or other like sound.

“The howl of the wind”

A prolonged cry of distress or anguish; a wail.

To utter a loud, protracted, mournful sound or cry, as dogs and wolves often do.

To utter a sound expressive of pain or distress; to cry aloud and mournfully; to lament; to wail.

To make a noise resembling the cry of a wild beast.