A town in northern Bosnia and Herzegovina; population 164,200 (est. 2008).
Definition of Banja Luka in US English:
Banja Luka
proper nounˌbänyə ˈlo͞okə
A spa town in northern Bosnia and Herzegovina; population 164,200 (est. 2008). It served as a base for Bosnian Serbs during their war against Bosnian Muslims in the 1990s.