Writer with note editor enclosed (6)
I believe the answer is:
penned
'enclosed' is the definition.
(similar in meaning)
'writer with note editor' is the wordplay.
'writer with' becomes 'pen' (I've seen this in other clues).
'note' becomes 'n' (abbreviation).
'editor' becomes 'ed' (abbreviation).
'pen'+'n'+'ed'='PENNED'
(Other definitions for penned that I've seen before include "Confined; written" , "Caged, wrote" , "Wrote; enclosed" , "Kept in an enclosure; written" , "under house arrest?" .)