Down from university? (4)
I believe the answer is:
blue
This clue might be a double definition.
'down' is the first definition.
(both can mean sad)
'university?' is the second definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Maybe they are linked in a way I don't understand?
'from' is the link.
Can you help me to learn more?
(Other definitions for blue that I've seen before include "ball at snooker" , "Colour - near the knuckle!" , "Colour; obscene" , "Miserable; waste (money)" , "in Oxford, it's dark" .)