1. 熊熊燃烧的;炽烈的
A roaring fire has large flames and is sending out a lot of heat.

2. (成功)巨大的
If something is a roaring success, it is very successful indeed.

3. see also: roar

4. 做成一笔大买卖;售出大批货物;生意兴隆
If someone does a roaring trade in a type of goods, they sell a lot of them.

1. a very loud utterance (like the sound of an animal)

e.g. his bellow filled the hallway

Synonym: bellowbellowinghollahollerholleringholloholloaroaryowl

2. a deep prolonged loud noise

Synonym: boomroarthunder