Bay window in Loire (5)

I believe the answer is:

oriel

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

'bay window' is the definition.
(I know that oriel is a type of bay window)

'loire' is the wordplay.
'loire' can be anagrammed to 'ORIEL'.
Though, I'm not sure how the anagram is indicated.

'in' is the link.

Can you help me to learn more?

(Other definitions for oriel that I've seen before include "Recessed bay window" , "Large snake" , "First-floor bay (window)" , "Loire (anag.)" , "place to study at Oxford" .)

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

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