border

Borders define geographic boundaries of political entities or legal jurisdictions, such as governments, states or subnational administrative divisions. They may foster the setting up of buffer zones. In the past many borders were not clearly defined lines, but were neutral zones called marchlands. This has been reflected in recent times with the neutral zones that were set up along part of Saudi Arabia's borders with Kuwait and Iraq (however, these zones no longer exist). In modern times the concept of a marchland has been replaced by that of the clearly defined and demarcated border.
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v. edge, rim; verge, border; bind

n. frame which surrounds the application window (Computers)

(v. t.)
To make a border for; to furnish with a border, as for ornament; as, to border a garment or a garden.
  

(v. t.)
To confine within bounds; to limit.
  

(v. t.)
To be, or to have, contiguous to; to touch, or be touched, as by a border; to be, or to have, near the limits or boundary; as, the region borders a forest, or is bordered on the north by a forest.
  

(v. i.)
To touch at the edge or boundary; to be contiguous or adjacent; -- with on or upon as, Connecticut borders on Massachusetts.
  

(v. i.)
To approach; to come near to; to verge.
  

(n.)
The outer part or edge of anything, as of a garment, a garden, etc.; margin; verge; brink.
  

(n.)
A strip or stripe arranged along or near the edge of something, as an ornament or finish.
  

(n.)
A narrow flower bed.
  

(n.)
A boundary; a frontier of a state or of the settled part of a country; a frontier district.