Student of vision? (5)
I believe the answer is:
pupil
This could be a double definition.
'student' is the first definition.
(pupil can mean a student at a school)
'vision?' is the second definition.
Although both the answer and definition are singular nouns, I can't see how they can define each other.
'of' is the link.
Can you help me to learn more?
(Other definitions for pupil that I've seen before include "One under instruction" , "Scholar" , "One in the eye or in place of learning" , "One being taught" , "bit of a looker" .)