A Big Apple individual: Tom, Dick or Harry? (6)

I believe the answer is:

anyone

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'tom dick or harry?' is the definition.
I know nothing about this answer so I can't judge whether it can be defined by this definition.

'a big apple individual' is the wordplay.
'a big apple' becomes 'any' (I can't justify this - if you can you should give a lot more credence to this answer).
'individual' becomes 'one' (an individual is one person).
'any'+'one'='ANYONE'

Can you help me to learn more?

(Other definitions for anyone that I've seen before include "Nobody specified" , "A random person" , "Whosoever" , "An unspecified person or persons" , "Anybody at all" .)

I've seen this clue in The Telegraph.

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