4. (adj.)roaring making or causing a roar, as thunder.
5. roaring brisk; active: a roaring business.
6. roaring complete; utter: a roaring idiot.
7. (adv.)roaring very: roaring drunk.
Etymology: (bef. 1000)
Definition of 'Roaring'
Princeton's WordNet
1. (noun)boom, roar, roaring, thunder a deep prolonged loud noise
2. (adj)bellow, bellowing, holla, holler, hollering, hollo, holloa, roar, roaring, yowl a very loud utterance (like the sound of an animal) "his bellow filled the hallway"
3. (adverb)booming, flourishing, palmy, prospering, prosperous, roaring, thriving very lively and profitable "flourishing businesses"; "a palmy time for stockbrokers"; "a prosperous new business"; "doing a roaring trade"; "a thriving tourist center"; "did a thriving business in orchids"
4. (adverb)roaring extremely "roaring drunk"
Definition of 'Roaring'
Webster Dictionary
1. (noun)Roaring 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. (noun)Roaring 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
3. Roaring of Roar
Definition of 'Roaring'
The Standard Electrical Dictionary
1. Roaring A term applied to the noise sometimes produced in a voltaic arc, when the electrodes are close together and a heavy current is passing.
Definitions of Roaring 
