Qualified corn dealer? (11)

I believe the answer is:

chiropodist

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'qualified corn dealer?' is the definition.
The answer and definition can be both people as well as being singular nouns.
Maybe there's an association between them I don't understand?

This is all the clue.

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(Other definitions for chiropodist that I've seen before include "One treating the feet" , "Foot doctor" , "Foot-doctor" , "Treater of feet" , "corn cutter" .)

I've seen this clue in The Globe and Mail.

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