Nearly time, left in student disco (9)
I believe the answer is:
nightclub
'disco' is the definition.
(I've seen this before)
'nearly time left in student' is the wordplay.
'nearly' becomes 'nigh' (synonyms).
'time' becomes 't' (abbreviation).
'left in student' becomes 'club' (I can't explain this - if you can you should believe this answer much more).
'nigh'+'t'+'club'='NIGHTCLUB'
Can you help me to learn more?
(Other definitions for nightclub that I've seen before include "one of the high spots" , "dance venue" , "Haunt" , "Hot spot" , "Where one might have room to swing" .)