Charm a Greek character hired out (6)

I believe the answer is:

amulet

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

'a greek character hired out' is the wordplay.
'greek character' becomes 'mu' (letter from the Greek alphabet).
'hired out' becomes 'let'.
'a'+'mu'+'let'='AMULET'

(Other definitions for amulet that I've seen before include "Lucky ornament" , "Lucky trinket" , "Small charm" , "Charm to protect from evil" , "Charm protecting against evil" .)

I've seen this clue in The Times, The Independent and The Sun.

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