Crossword Genius

In conversation, agrees bloke exudes charm (8)

Ross

I believe the answer is:

talisman

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'charm' is the definition.
(talisman is a kind of charm)

I don't understand the remainder of the clue.

Can you help me to learn more?

(Other definitions for talisman that I've seen before include "Magically protective object" , "Object believed to protect wearer" , "Liam, Stan has charm." , "It's said to be a protection against evil" , "Object with magical power" .)

I've seen this clue in The Telegraph.
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