Meaning of “thunder” - Learner’s Dictionary

thunder

verb uk us /ˈθʌndər/
it thunders

When it thunders during a storm, a loud noise comes from the sky.

thunder along/down/through, etc

to move in a way that makes a deep, loud, continuous sound:

Traffic thunders through the village all day.

(Definition of “thunder verb” from the Cambridge Learner’s Dictionary © Cambridge University Press)