Crossword Genius

Large fruit in Gotham? (3,5)

Ross

I believe the answer is:

big apple

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

'gotham?' is the definition.
I know nothing about this answer so I cannot tell whether it can be defined by this definition.

'large fruit' is the wordplay.
'large' becomes 'big' (synonyms).
'fruit' becomes 'apple' (apple is a kind of fruit).
'big'+'apple'='BIG APPLE'

'in' is the link.

Can you help me to learn more?

(Other definitions for big apple that I've seen before include "US city's" , "NY City nickname" , "Slang for New York citry" , "Large fruit in the US?" , "Fruity name for New York" .)

I've seen this clue in The Sun.
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