Read the dictionary definition of roar. All definitions for this word.
1. a very loud utterance (like the sound of an animal)
1. his bellow filled the hallway
2. a deep prolonged loud noise
3. the sound made by a lion
4. laugh unrestrainedly and heartily
5. utter words loudly and forcefully
1. `Get out of here,' he roared
6. make a loud noise, as of wind, water, or vehicles
1. The wind was howling in the trees
2. The water roared down the chute
7. emit long loud cries
1. wail in self-pity
2. howl with sorrow
8. make a loud noise, as of animal
1. The bull bellowed
9. act or proceed in a riotous, turbulent, or disorderly way
1. desperadoes from the hills regularly roared in to take over the town