Emily Dickinson Lexicon

ROAR, n.

1. A full loud sound of some continuance; the cry of a beast; as, the roar of a lion or bull.
2. The loud cry of a child or person in distress.
3. Clamor; outcry of joy or mirth; as, a roar of laughter. He set the company in a roar.
4. The loud continued sound of the sea in a storm, or the howling of a tempest. – Philips.
5. Any loud sound of some continuance; as, the roar of cannon.