Another qualification in torture (5,6)
I believe the answer is:
third degree
'torture' is the definition.
Although both the answer and definition are singular nouns, I can't understand how they can define each other.
'another qualification' is the wordplay.
'another' becomes 'third' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'qualification' becomes 'degree' (university qualification).
'third'+'degree'='THIRD DEGREE'
'in' acts as a link.
Can you help me to learn more?
(Other definitions for third degree that I've seen before include "Post-doctorate" , "Torture, especially to obtain information" , "Demanding viva" , "doctorate, perhaps" , "What you may study for after master's" .)