Make fun of university students in mine waste (7)

I believe the answer is:

mullock

I'm a little stuck... Click here to teach me more about this clue!

'mine waste' is the definition.
The definition suggests a singular noun which matches the answer.

'make fun of university students in' is the wordplay.
'make fun of' becomes 'mock' (I've seen this in another clue).
'university' becomes 'u' (abbreviation for university).
'students' becomes 'LL' (two abbreviations for learner).
'in' is an insertion indicator.
'u'+'ll'='ull'
'mock' placed around 'ull' is 'MULLOCK'.

Can you help me to learn more?

I've seen this clue in the Sydney Morning Herald.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.