a line that separates two countries, etc.; the land near this line
مرز, سرحد, خط حدفاصل
2
the edge of land where people have settled and built towns, beyond which the country is wild and unknown, especially in the western US in the 19th century
مرز, خطه مرزی, ناحیه مرزی
a remote frontier settlement
America's wild frontier
3
the limit of something, especially the limit of what is known about a particular subject or activity