intransitive verb
Definition: To make a loud, unpleasant noise, similar to a cat's cry, often used to describe a noisy argument or a shrill sound.
Example: The cats began to caterwaul outside my window, making it hard to sleep.
noun
Definition: A loud and unpleasant noise, often resembling a wailing or screeching sound.
Example: The caterwaul of the cats outside kept me awake all night.