Prohibition, thanks to derisive cry (5)
I believe the answer is:
taboo
'prohibition' is the definition.
(I've seen this before)
'thanks to derisive cry' is the wordplay.
'thanks' becomes 'ta' (UK informal version of 'thank you').
'to derisive cry' becomes 'boo' (I've seen this in another clue).
'ta'+'boo'='TABOO'
(Other definitions for taboo that I've seen before include "A ban or prohibition of superstitious kind" , "Not allowed, forbidden, proscribed" , "Socially prohibited" , "Prohibited by religion or custom" , "Strictly forbidden" .)