Bačka /ˈbɑːt͡ʃ.kə/ noun1 •A historical region presently divided between Vojvodina (autonomous province of Serbia) and Hungary.Vojvodina includes the historic regions of Bačka, between the Danube and Tisa rivers and the Hungarian border; Banat, to the east of Bačka; and Srem (Srijem), to the south. — 1998