Crossword Genius

One of many in some gallery? (5)

Ross

I believe the answer is:

miner

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

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

'many in some gallery?' is the wordplay.
'many in' becomes 'mine' (I can't explain this - if you can you should believe this answer much more).
'some' indicates the central letters.
'gallery?' becomes 'art' (synonyms).
The middle of 'art' is 'r'.
'mine'+'r'='MINER'

'of' acts as a link.

Can you help me to learn more?

(Other definitions for miner that I've seen before include "Underground worker" , "Pitman" , "One who digs for ore" , "Man of 49" , "it's the pits, for me" .)

I've seen this clue in the Evening Standard.
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