Meaning of “autumn” - Learner’s Dictionary

autumn

noun [ C, U ] us uk /ˈɔːtəm/ also US fall

A2 the season of the year between summer and winter, when leaves fall from the trees:

I'm starting a new job in the autumn.
autumn leaves

More examples

autumnal adjective us uk /ɔːˈtʌmnəl/

typical of autumn

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