Recent pupil pines for the quadrangles (7)

I believe the answer is:

oblongs

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'the quadrangles' is the definition.
The answer and definition can be both shapes as well as being plural nouns.
Maybe there's an association between them I don't understand?

'recent pupil pines' is the wordplay.
'recent pupil' becomes 'ob' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'pines' becomes 'longs' ('long' can be a synonym of 'pine').
'ob'+'longs'='OBLONGS'

'for' acts as a link.

Can you help me to learn more?

(Another definition for oblongs that I've seen is " Rectangles".)

I've seen this clue in The Times.

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