Actor Cheadle (3)
I believe the answer is:
don
'actor cheadle' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for don that I've seen before include "Spanish gent or Mafia chief" , "A Mafia chief like Corleone" , "Yorkshire river" , "Put on or assume" , "Put on for the Mafia chief and Spanish aristocrat" .)