a division of territory, as of a country, state, or county, marked off for administrative, electoral, or other purposes.

a region or locality

the theater district; the Lake District.

British . a subdivision of a county or a town.

the District, the District of Columbia; Washington, D.C.

to divide into districts.

noun

commune , community , department , locale , locality , neck of the woods , neighborhood , parcel , parish , precinct , quarter , region , section , sector , stomping ground , territory , turf * , vicinage , vicinity , ward , belt , tract , zone , area , country , terrain , canton , circuit , diocese , province , turf