Crossword Genius

One saint potentially from Tallinn (8)

Ross

I believe the answer is:

estonian

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'tallinn' is the definition.
Although both the answer and definition are singular nouns, I can't see how one could define the other.

'one saint potentially' is the wordplay.
'potentially' indicates anagramming the letters (letters have the potential to spell a new word).
'one'+'saint'='onesaint'
'onesaint' with letters rearranged gives 'ESTONIAN'.

'from' acts as a link.

Can you help me to learn more?

(Other definitions for estonian that I've seen before include "Eastern Europe" , "Baltic state native" , "Foreign" , "Baltic state national" , "Northern European" .)

I've seen this clue in The Sun.
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