(1):
(p. pr. & vvb. n.) of Roar
(2):
(n.) A loud, deep, prolonged sound, as of a large beast, or of a person in distress, anger, mirth, etc., or of a noisy congregation.
(3):
(n.) An affection of the windpipe of a horse, causing a loud, peculiar noise in breathing under exertion; the making of the noise so caused. See Roar, v. i., 5.