Bor·der n.
1. The outer part or edge of anything, as of a garment, a garden, etc.; margin; verge; brink.
Upon the borders of these solitudes. --Bentham.
In the borders of death. --Barrow.
2. A boundary; a frontier of a state or of the settled part of a country; a frontier district.
3. A strip or stripe arranged along or near the edge of something, as an ornament or finish.
4. A narrow flower bed.
Border land, land on the frontiers of two adjoining countries; debatable land; -- often used figuratively; as, the border land of science.
The Border, The Borders, specifically, the frontier districts of Scotland and England which lie adjacent.
Over the border, across the boundary line or frontier.
Syn: -- Edge; verge; brink; margin; brim; rim; boundary; confine.