Ban professional taking part of former partner in show (11)
I believe the answer is:
prohibition
'ban' is the definition.
(I know that ban can be written as prohibition)
'professional taking part of former partner in show' is the wordplay.
I cannot really see how this works, but
'professional' could be 'pro' (synonyms) and 'pro' is found within the answer.
'taking' could be 'on' (eg one taking drugs is 'on' drugs) and 'on' is located in the answer.
'part' could be 'ti' (ti is a kind of part) and 'ti' is located in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Another definition for prohibition that I've seen is " Ban (eg on alcohol)".)