lowland

adjective
1
connected with an area of land that is fairly flat and not very high above sea level
زمین پست, منطقه پایین‌دست
compare highland
noun
1
an area of land that is fairly flat and not very high above sea level
سرزمین پست, زمین پست, مناطق کم ارتفاع, دشت
compare highland
2
the region of Scotland south and east of the Highlands, which has flatter countryside
جلگه, دشت, زمین پست, ناحیه کم‌ارتفاع, سرزمین پست, ناحیه جلگه‌ای