To Roar

1. (intransitive) 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.
4. Generally, of inanimate objects etc., to make a loud resounding noise.
5. (figuratively) To proceed vigorously.
6. (transitive) To cry aloud; to proclaim loudly.
7. To be boisterous; to be disorderly.
8. To make a loud noise in breathing, as horses do when they have a certain disease.
9. (Britain Yorkshire, North Midlands, informal) to cry