Crossword Genius

Like caretaker’s duties girl at Oxford college picked up? (10)

Ross

I believe the answer is:

janitorial

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

'like' is the definition.
Both the definition and answer are adjectives.
Perhaps you can see an association between them that I can't see?

'caretaker's duties girl at oxford college picked up?' is the wordplay.
I cannot quite understand how this works, but
'girl' could be 'tori' and 'tori' is found in the answer.
This explanation may well be incorrect...

Can you help me to learn more?

I've seen this clue in The Times.
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