Roar"ing, n. 1. A loud, deep, prolonged sound, as of a large beast, or of a person in distress, anger, mirth, etc., or of a noisy congregation.

2. (Far.) 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.

Roar"ing, n. 1. A loud, deep, prolonged sound, as of a large beast, or of a person in distress, anger, mirth, etc., or of a noisy congregation.

2. (Far.) 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.

• Very; intensively; extremely.
  
• Very successful; lively; profitable; thriving; prosperous.
  
• Present participle of to roar.