Eastern Europeans (6)
(Another definition for serbs that I've seen is " People from Belgrade, say".)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">eastern europeans</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for czechs that I've seen before include "Slavs" , "Nationality of citizens of Prague" , "Citizens of a republic" , "Eg, Prague natives" .)