Amassed wealth draws in Welsh director in Hollywood (6)
I believe the answer is:
howard
'director in hollywood' is the definition.
(director Ron Howard)
'amassed wealth draws in welsh' is the wordplay.
'amassed wealth' becomes 'hoard' (I can't justify this - if you can you should believe this answer much more).
'draws in' means one lot of letters goes inside another.
'welsh' becomes 'W' (abbreviation).
'hoard' enclosing 'w' is 'HOWARD'.
Can you help me to learn more?
(Other definitions for howard that I've seen before include "-- Hughes, reclusive US?tycoon" , "Castle - - , Yorks." , "See 7" , "Man" , "Michael - - , ex-Tory leader" .)