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English definition of “border”

border

noun [C]  /ˈbɔr·dər/ us  

border noun [C] (DIVISION)

(also borderline) the line that divides one country or place from another: The Rio Grande forms part of the US border.

border noun [C] (EDGE)

a strip that goes around or along the edge of something, or the edge itself: The card has a pretty design around the border.

border

verb  /ˈbɔr·dər/ us  

border verb (BE NEXT TO)

[I/T] to be next to another country or place: [T] Guatemala borders Mexico. [I] Wisconsin borders on Illinois.

border verb (FORM EDGE)

[T] to form a strip along the edge of something: The road borders the coast for several miles.
Phrasal verbs
(Definition of border from the Cambridge Academic Content Dictionary © Cambridge University Press)
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