East European (4)
I believe the answer is:
slav
'east european' is the definition.
(the Slavs are a European people)
This is all the clue.
(Other definitions for slav that I've seen before include "Eastern European" , "One coming from Eastern Europe or Asian Russia" , "A Russian, say" , "Person speaking one of related languages of Euro-Asian border" , "Native of eastern Europe, perhaps" .)