Oscar-winner Burstyn (5)
I believe the answer is:
ellen
'oscar-winner burstyn' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for ellen that I've seen before include "MacArthur, round-the-world yachtswoman" , "Dame - MacArthur, round-the-world sailor" , "Dame - Terry, English actress" , "Girl's name" , "-- DeGeneres, US actress" .)