Korbut or Kurylenko (4)
I believe the answer is:
olga
'korbut or kurylenko' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for olga that I've seen before include "Could be Russian girl" , "Lady" , "Russian girl's name, anagram of ..." , "Slavic girl's name" .)