Actor ____ De Niro (6)
I believe the answer is:
robert
'actor de niro' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for robert that I've seen before include "-- Browning, English poet" , "---17 ac. 23, explorer" , "Name of three Scottish kings" , "- Browning, Eng. poet" , "Victorian premier" .)