A man of parts... (5)
I believe the answer is:
actor
'a man of parts' is the definition.
(I've seen this in another clue)
'a man of parts' is the wordplay.
'man' becomes 'ctr' (I can't justify this - if you can you should give a lot more credence to this answer).
'of' becomes 'o''.
'parts' is an insertion indicator (one word creates a gap in ie parts another word).
'ctr' placed around 'o' is 'ctor'.
'a'+'ctor'='ACTOR'
Can you help me to learn more?
(Other definitions for actor that I've seen before include "One in a play" , "Film star" , "Thesp" , "Person performing on stage or screen" , "one to take on roles" .)