Money including pence changed on Mahatma Gandhi Road, say (6)

I believe the answer is:

eponym

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(Other definitions for eponym that I've seen before include "someone giving a name" , "Hero" , "Word or place name derived from person's name" , "Name of person after whom something is named" , "Word derived from person's name or placename" .)

I've seen this clue in The Hindu.

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