Student sporting a Y (3)
I believe the answer is:
eli
'student sporting a y' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for eli that I've seen before include "Biblical high priest" , "Old Testament high priest" , "Teacher of prophet Samuel" , "- Wallach, US actor" , "- Whitney invented the cotton gin in seventeen ninety three" .)