<p><strong>Verb (used without object):</strong></p><ul><li>to utter a prolonged, inarticulate, mournful cry, usually high-pitched or clear-sounding, as in grief or suffering: to wail with pain.</li><li>to make mournful sounds, as music or the wind.</li><li>to lament or mourn bitterly.</li><li>Jazz: to perform exceptionally well.</li><li>Slang: to express emotion musically or verbally in an exciting, satisfying way.</li></ul><p><strong>Verb (used with object):</strong></p><ul><li>to express deep sorrow for; mourn; lament; bewail: to wail the dead; to wail one's fate.</li><li>to express in wailing; cry or say in lamentation: to wail one's grief.</li></ul><p><strong>Noun:</strong></p><ul><li>the act of wailing.</li><li>a wailing cry, as of grief, pain, or despair.</li><li>any similar mournful sound: the wail of an old tune.</li></ul>