Rewrite a better part for Mr Pacino (5)
I believe the answer is:
alter
'pacino' is the definition.
I can't judge whether this definition defines the answer.
'rewrite a better part for mr' is the wordplay.
'rewrite a better part' becomes 'ter' (I am not sure about this - if you are sure you should believe this answer much more).
'for' means one lot of letters go next to another (I've seen this in other clues).
'mr' becomes 'Al'.
'ter' after 'al' is 'ALTER'.
Can you help me to learn more?
(Other definitions for alter that I've seen before include "Become different" , "Metamorphose" , "Vary" , "Make changes to" , "Bout of extravagant spending" .)