Actor Roth (3)
I believe the answer is:
tim
'actor roth' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for tim that I've seen before include "-- Brooke-Taylor, comic" , "- Rice, musical lyricist" , "Tiny . . . is a loveable Dickens boy" , "Tiny ..., Bob Cratchit's son in A Christmas Carol" , "Sir -- Rice, lyricist" .)