n. & v.
--n.
1. a loud deep hoarse sound, as made by a lion, a person in pain or rage or excitement, thunder, a loud engine, etc.
2 a loud laugh.
--v.
1. intr. a utter or make a roar. b utter loud laughter. c (of a horse) make a loud noise in breathing as a symptom of disease.
2 intr. travel in a vehicle at high speed, esp. with the engine roaring.
3 tr. (often foll. by out) say, sing, or utter (words, an oath, etc.) in a loud tone.
Derivatives:
roarer n.
Etymology: OE rarian, of imit. orig.