Discipline, chastise (6)
I believe the answer is:
punish
I believe this is a double definition.
'discipline' is the first definition.
(I've seen this in another clue)
'chastise' is the second definition.
(I've seen this in another clue)
(Other definitions for punish that I've seen before include "Cause to suffer for an offence" , "Discipline" , "Flog" , "Possibly fine" , "Like wordplay in speech" .)