the deep prolonged cry characteristic of a wild animal, e.g. a lion

a loud cry, call, etc, e.g. of pain, anger, or laughter

a loud continuous confused sound

the roar of the waves

to happen or progress rapidly

She joined the firm in 1997 and was soon roaring to the top

said of a horse suffering from roaring: to make a loud noise in breathing

to utter (something) with a roar

to cause (oneself) to become (something) by roaring

He roared himself hoarse at the match