Noun
-
a very loud utterance (like the sound of an animal)
"his bellow filled the hallway"
-
a deep prolonged loud noise
Adjective
-
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"
Adverb
-
extremely
"roaring drunk"