European standard-bearer (4)
I believe the answer is:
pole
This clue is a double definition.
'european' is the first definition.
(someone from Poland)
'standard-bearer' is the second definition.
(flagpole - standard can mean a flag)
(Other definitions for pole that I've seen before include "location where it is always very cold" , "This position is favourable in motor race" , "'Round rod, of wood say (4)'" , "European; measure of length" , "Round rod of wood or metal" .)