Meaning of “fall” - Learner’s Dictionary

fall

noun us uk /fɔːl/
a 1% fall in pricesWe have seen a fall in sales.There was a dramatic fall in profits.There's been a 5% fall in exports.There was a fall of 25% in military spending.
AMOUNT [ C ]

B1 a reduction in the number or amount of something:

There's been a sharp fall in prices.
MOVEMENT [ C ]

B2 a movement of someone or something down to the ground:

a heavy fall of snow
The climbers were rushed to hospital after being injured in a fall.
SEASON [ C, U ] US UK/US autumn

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

He started a new job in the fall.
DEFEAT [ no plural ]

an occasion when a city, government, leader, etc loses power or control:

the fall of communism

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