Club fighter to prohibit a man of beastly nature (7)
I believe the answer is:
caliban
'a man of beastly nature' is the definition.
I can't tell whether this defines the answer.
'club fighter to prohibit' is the wordplay.
'club' becomes 'c' (this might be a standard abbreviation I've not previously seen).
'fighter' becomes 'ali' (boxer Muhammad Ali).
'to prohibit' becomes 'ban' (banning is a kind of prohibiting).
'c'+'ali'+'ban'='CALIBAN'
Can you help me to learn more?
(Other definitions for caliban that I've seen before include "Brutish man named in Shakespeare's Tempest" , "Role in The Tempest" , "Character in The Tempest" , "Literary character" , "Shakespeare character" .)