Confined criminals given regular coaching (11)
I believe the answer is:
constrained
'confined' is the definition.
(constraining is a kind of confining)
'criminals given regular coaching' is the wordplay.
'criminals' becomes 'cons' (short for convicts).
'given regular coaching' becomes 'trained' (to train someone is to coach them).
'cons'+'trained'='CONSTRAINED'
(Other definitions for constrained that I've seen before include "Appearing forced" , "Besides (archaic)" , "Reticent" , "Embarrassed" , "with shackles on" .)