Drew, possibly accompanying note, something taken from letter (7)
I believe the answer is:
tenancy
'something taken from letter' is the definition.
I can't judge whether this defines the answer.
'drew possibly accompanying note' is the wordplay.
'drew possibly' becomes 'nancy' (I can't explain this - if you can you should give a lot more credence to this answer).
'accompanying' means one lot of letters go next to another.
'note' becomes 'te' (musical note).
'nancy' put after 'te' is 'TENANCY'.
Can you help me to learn more?
(Other definitions for tenancy that I've seen before include "Occupation of rented property" , "Temporary occupation of property" , "Renting arrangement" , "Occupation of lands or houses for rent" , "Occupancy" .)