To cry loudly, as in pain, distress, or anger. Sole on the barren sands, the suffering chief Roared out for anguish, and indulged his grief. (Dryden) He scorned to roar under the impressions of a finite anger. (south)
2. To make a loud, confused sound, as winds, waves, passing vehicles, a crowd of persons when shouting together, or the like. The brazen throat of war had ceased to roar. (milton) How oft I crossed where carts and coaches roar. (gay)
4. To laugh out loudly and continuously; as, the hearers roared at his jokes.
5. To make a loud noise in breathing, as horses having a certain disease. See roaring. Roaring boy, a roaring, noisy fellow; name given, at the latter end queen Elizabeth's reign, to the riotous fellows who raised disturbances in the street. Two roaring boys of Rome, that made all split. Roaring forties, a sailor's name for the stormy tract of ocean between 40 deg and 50 deg north latitude.
Origin: OE. Roren, raren, AS. Rarian; akin to G. Rohten, OHG. Rrn.