The very opposite of Windsor? (4)

I believe the answer is:

eton

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'the very opposite of windsor?' is the definition.
The definition suggests a singular noun which matches the answer.

This is all the clue.

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(Other definitions for eton that I've seen before include "English college of note" , "Noted public school" , "Place for learning" , "College in Berkshire" , "Public school founded in 1440" .)

I've seen this clue in the Evening Standard.

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