Annual fall (6)
I believe the answer is:
autumn
This clue could be a double definition.
'annual' is the first definition.
Both the answer and definition are adjectives. Maybe there's an association between them I don't understand?
'fall' is the second definition.
(I know that fall can be written as autumn)
Can you help me to learn more?
(Other definitions for autumn that I've seen before include "Season called the fall in America" , "October's season" , "Season of decay" , "Browning happened then" , "Season of mists and mellow fruitfulness, according to Keats" .)