<p><strong>Verb:</strong></p><ul><li>to utter a loud, deep cry or howl, as in excitement, distress, or anger.</li><li>to laugh loudly or boisterously: to roar at a joke.</li><li>to make a loud sound or din, as thunder, cannon, waves, or wind.</li><li>to function or move with a loud, deep sound, as a vehicle: The automobile roared away.</li><li>to make a loud noise in breathing, as a horse.</li><li>to utter or express in a roar: to roar denials.</li><li>to bring, put, make, etc., by roaring: to roar oneself hoarse.</li></ul><p><strong>Noun:</strong></p><ul><li>a loud, deep cry or howl, as of an animal or a person: the roar of a lion.</li><li>a loud, confused, constant noise or sound; din; clamor: the roar of the surf; the roar of lively conversation from the crowded party.</li><li>a loud outburst: a roar of laughter; a roar of approval from the audience.</li></ul>