Chief form of wrestling before crowds (7)
I believe the answer is:
supremo
'chief' is the definition.
(I've seen this before)
'form of wrestling before crowds' is the wordplay.
I cannot quite see how this works, but
'of' could be 'o' and 'o' is found in the answer.
'before' could be 'pre' (prefix meaning 'before') and 'pre' is found within the answer.
The remaining letters 'sum' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for supremo that I've seen before include "Big fish" , "Top commander" , "big Daddy" , "Person in overall charge, big boss" , "Person in overall authority" .)