Rings club about prohibition (5)
I believe the answer is:
taboo
'prohibition' is the definition.
(thesaurus)
'rings club about' is the wordplay.
'rings' becomes 'oo' (multiple circles).
'club' becomes 'bat' (bat is a kind of club).
'about' says the letters should be written backwards.
'oo'+'bat'='oobat'
'oobat' backwards is 'TABOO'.
(Other definitions for taboo that I've seen before include "unacceptable" , "Strictly forbidden" , "Prohibited by social custom" , "Ritually forbidden" , "Beyond the pale" .)