intransitive verb
Definition: To make a loud, high-pitched sound, often expressing grief or pain.
Example: The baby began to wail when it was hungry.
noun
Definition: A loud and high-pitched cry that expresses grief, pain, or protest.
Example: The wail of the siren echoed through the streets at night.
transitive verb
Definition: To make a loud, mournful cry, often expressing grief or pain.
Example: She began to wail when she heard the sad news.