borders
n. countable A2 Elementary US //ˈbɔɹdɝz// UK //bˈɔːdəz// bor·ders
n. the lines that divide two countries or areas. You cross them when you travel from one nation to another.
n. the official lines or geographic boundaries separating two political or legal jurisdictions, such as countries or states.
The train crosses three national borders during the trip.
Travelers must show their passports when they reach the borders of the European Union.
The treaty aimed to resolve long-standing disputes regarding maritime borders, ensuring both nations had equitable access to the offshore fishing grounds and mineral resources.
Usage
Often used in the plural when referring to the general concept of national boundaries.