Might do this in history, if it's deemed important, in Fall, perhaps (6)
I believe the answer is:
godown
'might do this in history if it's deemed important in fall perhaps' is the definition.
Although both the answer and definition are singular nouns, I don't understand how they can define each other.
'might do this in history' is the wordplay.
'might' is an anagram indicator (I've seen this in other clues).
'this in' indicates putting letters inside.
'history' becomes 'gown' (I can't explain this - if you can you should give a lot more credence to this answer).
'do' is an anagram of 'od'.
'od' going into 'gown' is 'GODOWN'.
Can you help me to learn more?
(Other definitions for godown that I've seen before include "eastern warehouse" , "storage facility in India" , "Leave university" .)