Crossword Genius

One of those dreaming of Oxford? (5)

Ross

I believe the answer is:

spire

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

'oxford?' is the definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Maybe they are linked in a way I don't understand?

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for spire that I've seen before include "one over the church?" , "Church feature visible from a distance" , "Church steeple" , "Piers (anag.)" , "Crooked feature in Chesterfield" .)

I've seen this clue in the Evening Standard.
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