Trace student drunk on wine (6)
I believe the answer is:
claret
'wine' is the definition.
(claret is a kind of wine)
'trace student drunk' is the wordplay.
'student' becomes 'L' (as in L-plates for learner drivers).
'drunk' indicates an anagram.
'trace'+'l'='tracel'
'tracel' with letters rearranged gives 'CLARET'.
'on' is the link.
(Other definitions for claret that I've seen before include "Dry red wine of Bordeaux" , "Irish county starts the wine" , "in one's veins?" , "Red wine from southern France" , "Deep red colour" .)