Recasts eccentric performer (7)
![Ross](/clue/static/ross-mug.min.png)
I believe the answer is:
actress
'performer' is the definition.
(actress is a kind of performer)
'recasts eccentric' is the wordplay.
'eccentric' indicates an anagram.
'recasts' anagrammed gives 'ACTRESS'.
(Other definitions for actress that I've seen before include "Female stage-player" , "One playing" , "one with a particular role?" , "Female in plays/films" , "Recasts (anag) - performer" .)