Definitions of border:

• noun:   a strip forming the outer edge of something

  Example: "The rug had a wide blue border"

• noun:   a line that indicates a boundary
• noun:   the boundary of a surface
• noun:   the boundary line or the area immediately inside the boundary
• noun:   a decorative recessed or relieved surface on an edge
• verb:   provide with a border or edge
• verb:   lie adjacent to another or share a boundary
• verb:   form the boundary of; be contiguous to
• verb:   extend on all sides of simultaneously; encircle
• verb:   enclose in or as if in a frame
• name:  A surname (rare: 1 in 100000 families; popularity rank in the U.S.: #11738)