to make a deep, very loud noise [↪ growl]:
We heard a lion roar.
The engines roared.
2 [intransitive and transitive]
to shout something in a deep powerful voice:
'Get out of my house!' he roared.
The crowd roared in delight.
to laugh loudly and continuously:
By this time, Michael was roaring with laughter.
4 [intransitive always + adverb/preposition]TTC
if a vehicle roars somewhere, it moves very quickly and noisily:
The car roared off down the road.
roar backphrasal verb
In the second half Leeds came roaring back with two goals in five minutes.