交界地区
边缘地

Border \Bor"der\, n. [OE. bordure, F. bordure, fr. border to
border, fr. bord a border; of German origin; cf. MHG. borte
border, trimming, G. borte trimming, ribbon; akin to E. board
in sense 8. See {Board}, n., and cf. {Bordure}.]
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.