Dictionary definition · roar
noun
- a deep prolonged loud noise
- a very loud utterance (like the sound of an animal)"his bellow filled the hallway"
- the sound made by a lion
verb
- make a loud noise, as of wind, water, or vehicles"The wind was howling in the trees"
- utter words loudly and forcefully"‘Get out of here,’ he roared"
- emit long loud cries"wail in self-pity"
- act or proceed in a riotous, turbulent, or disorderly way"desperadoes from the hills regularly roared in to take over the town"
- make a loud noise, as of animal"The bull bellowed"
- laugh unrestrainedly and heartily
Source: Open English WordNet (CC BY 4.0).