I. ˈrȯr-iŋ adjective
Date: 14th century
1. : making or characterized by a sound resembling a roar : loud
roaring applause
2. : marked by prosperity especially of a temporary nature : booming
3. : great in intensity or degree
in the roaring heat
a roaring success
• roar·ing·ly adverb
II. adverb
Date: 1697
: extremely
was roaring hungry — Herman Wouk
III. noun
Date: circa 1823
: noisy inhalation in a horse especially upon exercising that is caused by paralysis and muscular atrophy of part of the larynx