Well-known talker (5)

I believe the answer is:

money

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'well-known talker' is the definition.
Although both the answer and definition are singular nouns, I don't see how one could define the other.

This is all the clue.

Can you help me to learn more?

(Other definitions for money that I've seen before include "ready" , "Lucre" , "It's the root of all evil" , "Medium of exchange" , "Legal tender" .)

I've seen this clue in the Evening Standard.

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