Awaken in prison (4)
I believe the answer is:
stir
This clue is a double definition.
'awaken' is the first definition.
(thesaurus)
'prison' is the second definition.
(informal term for prison)
'in' is the link.
(Other definitions for stir that I've seen before include "Disturb" , "Agitate, arouse" , "Cause to move in slangy prison" , "Commotion to mix" , "fuss" .)