What does "border" mean?

Additional senses

1. 2.A strip or stripe arranged along or near the edge of something, as an ornament or finish.
2. 3.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.
3. 4.To touch at the edge or boundary; to be contiguous or adjacent; -- with on or upon as, Connecticut borders on Massachusetts.
4. 5.To approach; to come near to; to verge. Wit which borders upon profaneness deserves to be branded as folly. Abp. Tillotson.
5. 6.To make a border for; to furnish with a border, as for ornament; as, to border a garment or a garden.
6. 7.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. The country is bordered by a broad tract called the "hot region." Prescott. Shebah and Raamah . . . border the sea called the Persian gulf. Sir W. Raleigh.
7. 8.To confine within bounds; to limit. [Obs.] That nature, which contemns its origin, Can not be bordered certain in itself. Shak.