Phrase in advanced student final (8)
I believe the answer is:
terminal
'final' is the definition.
(I know that final can be written as terminal)
'phrase in advanced student' is the wordplay.
'phrase' becomes 'term' (I've seen this before).
'advanced' becomes 'a'.
'student' becomes 'l' (as in L-plates for learner drivers).
'term'+'in'+'a'+'l'='TERMINAL'
(Other definitions for terminal that I've seen before include "Last station for tramline" , "work station" , "Electrical connector" , "Arrival or departure building" , "Of an illness causing death" .)