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English definition of “roar”

roar

verb [I]    /rɔr, roʊr/
to make a long, loud, deep sound: Lions were roaring in their cages. The crowd roared with laughter. If a vehicle roars somewhere, it moves there quickly making a lot of noise: His truck roared down the steep mountain. roar    /rɔr, roʊr/ noun [C/U] [U] Living near the highway, we hear the constant roar of traffic.
(Definition of roar verb from the Cambridge Academic Content Dictionary © Cambridge University Press)
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