Star actors going wrong (6)

I believe the answer is:

castor

'star' is the definition.
(Castor is an example)

'actors going wrong' is the wordplay.
'going wrong' indicates anagramming the letters.
'actors' is an anagram of 'CASTOR'.

(Other definitions for castor that I've seen before include "Brother to Pollux" , "Superfine baker's sugar" , "Twin to Pollux" , "Small swivelling wheel on a furniture leg" , "Trolley wheel" .)

I've seen this clue in The Guardian.

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