border

American  

[bawr-der] / ˈbɔr dər /

noun

1. the part or edge of a surface or area that forms its outer boundary.

   Synonyms:

   verge, periphery, rim

2. the line, limit, or delimiting geographic feature that separates one country, state, province, etc., from another: The largest lake within the borders of Canada is Great Bear Lake.

   You cannot cross the border without a visa.

   The largest lake within the borders of Canada is Great Bear Lake.

3. the district or region that lies along the boundary line of another.

4. the frontier of civilization.

5. the border,

   1. the border between the United States and Mexico, especially along the Rio Grande.

   2. (in the British Isles) the region along the boundary between England and Scotland.

6. brink; verge.

7. an ornamental strip or design around the edge of a printed page, a drawing, etc.

8. an ornamental design or piece of ornamental trimming around the edge of a fabric, rug, garment, article of furniture, etc.

9. Horticulture.

   1. a long, narrow bed planted with flowers, shrubs, or trees.

   2. a strip of ground in which plants are grown, enclosing an area in a garden or running along the edge of a walk or driveway.

   3. the plants growing in such a strip.

      a border of tulips along the path.

10. Theater.

    1. a narrow curtain or strip of painted canvas hung above the stage, masking the flies and lighting units, and forming the top of the stage set.

    2. border light.

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verb (used with object)

1. to make a border around; adorn with a border.

2. to form a border or boundary to.

3. to lie on the border of; adjoin.

verb (used without object)

1. to form or constitute a border; be next to.

   California borders on the Pacific Ocean.

2. to approach closely in character; verge.

   The situation borders on tragedy.

border ¹ British  

/ ˈbɔːdə /

noun

1. a band or margin around or along the edge of something

2. the dividing line or frontier between political or geographic regions

3. 1. a region straddling such a boundary

   2. ( as modifier )

      border country

4. 1. a design or ornamental strip around the edge or rim of something, such as a printed page or dinner plate

   2. ( as modifier )

      a border illustration

5. a long narrow strip of ground planted with flowers, shrubs, trees, etc, that skirts a path or wall or surrounds a lawn or other area

   a herbaceous border

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verb

1. (tr) to decorate or provide with a border

2. 1. to be adjacent (to); lie along the boundary (of)

      his land borders on mine

   2. to be nearly the same (as); verge (on)

      his stupidity borders on madness

Border ² British  

/ ˈbɔːdə /

noun

1. (often plural) the area straddling the border between England and Scotland

2. the area straddling the border between Northern Ireland and the Republic of Ireland

3. the region in S South Africa around East London

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Border ³ British  

/ ˈbɔːdə /

noun

1. Allan ( Robert ). born 1955, Australian cricketer; played in 156 test matches (1978–1994), 93 as captain; first Australian batsman to score 10,000 test runs

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Usage

What does border mean? A border is the outer edge of a surface or image that marks its boundary in reference to others, such as a border you draw around a picture. A border is also a line that acts as a boundary between two or more geographic areas, whether it’s small areas, like between neighbors on the same street, or large areas, like between countries. To border often means to create a border, as on a picture. To border can also mean to form a border or to be next to one, as in Maine borders New Hampshire to the west and south and Canada to the north and east. Example: The border around the image is quite interesting, but I don’t think it fits the piece.

Related Words

See edge. See boundary.

Other Word Forms

• bordered adjective
• borderless adjective
• transborder adjective
• unbordered adjective

Etymology

Origin of border

First recorded in 1325–75; Middle English bordure, from Anglo-French, Old French, equivalent to bord(er) “to border” (derivative of bord “ship's side, edge,” from Germanic; board ) + -ure noun suffix; -ure

Explanation

When you cross a border from one country into another, you'll need to show your identification papers and maybe a visa to the border patrol officials. A border separates one thing from another, most famously countries. Sometimes neighboring countries have border disputes, if they don't think the lines were drawn fairly or if they don't get along. Borders can also be less official. You might want to plant a border of cabbages along your front walk, or you could sew a border of sequins along the edge of your collar. But you'd have to go easy on the sequins, as too many would "border on the garish."

Example Sentences

At a Pentagon news conference on Thursday, America's most senior military officer Gen Dan Caine presented a map which showed a "blockade line" stretching from the eastern tip of Oman to Iran's border with Pakistan.

From BBC • Apr. 17, 2026

Much of it could be privately financed by the farmers who operate on properties that border the channels, as they did for nearly a century.

From The Wall Street Journal • Apr. 17, 2026

But that war was largely fought in trenches near the border.

From The Wall Street Journal • Apr. 16, 2026

Robinson recalled how one Black woman came up to him after the show to let him know she believed in Trump’s border wall.

From Los Angeles Times • Apr. 16, 2026

The border around West Berlin was nearly a hundred miles long.

From "Fallout: Spies, Superbombs, and the Ultimate Cold War Showdown" by Steve Sheinkin

Related Words

• abut
• adjoin
• encircle
• flank
• neighbor
• surround