ROAR

noun

1. A long, loud, deep shout, as of rage or laughter, made with the mouth wide open.
2. The cry of the lion.
3. The deep cry of the bull.

verb

1. To make a loud, deep cry, especially from pain, anger, or other strong emotion.
2. To laugh in a particularly loud manner.
3. Of animals (especially the lion), to make a loud deep noise.