US word for autumn (4)

I believe the answer is:
fall
(Other definitions for fall that I've seen before include "Sudden decline" , "A season in the US" , "Descend, drop" , "Autumn in America" , "Drop, decrease" .)
I believe the answer is:
fall
(Other definitions for fall that I've seen before include "Sudden decline" , "A season in the US" , "Descend, drop" , "Autumn in America" , "Drop, decrease" .)