borough has definitions from the fields of government,geography
1
[ noun ] (government,geography) one of the administrative divisions of a large city

Used in print

(Marvin Schiller, "The Sheep's in the Meadow,"...)

But that year was different , for just as the city , in the form of my street clothes , had intruded upon my mountain nights , so an essential part of the summer gave promise of continuing into the fall : Jessica and I , about to be separated not by a mere footbridge or mess-hall kitchen but by the immense obstacle of residing in cruelly distant boroughs , had agreed to correspond .

I felt superior to the neighborhood friends I was leaving_behind , felt older than my years , and was full of compliments for myself as I headed into the subway that was carrying its packs of passengers out of_that dull borough and into the unstable , tantalizing excitement of Manhattan .

2
[ noun ] an English town that forms the constituency of a member of Parliament
*