Star writer has a complicated problem (9)
I believe the answer is:
pentangle
'star' is the definition.
(I've seen this before)
'writer has a complicated problem' is the wordplay.
'writer' becomes 'pen' (something which writes).
'has' is a charade indicator (letters next to each other).
'a complicated problem' becomes 'tangle' (I can't explain this - if you can you should believe this answer much more).
'pen'+'tangle'='PENTANGLE'
Can you help me to learn more?
(Other definitions for pentangle that I've seen before include "Pentagram" , "mystic symbol" , "Five-pointed star" .)