border

The border between Canada and USA is the longest in the world.

The identification of the border between England and Scotland always has been a source of interest to railway travellers. For many years, however, the exact points north of Berwick and Carlisle at which the Anglo-Scottish main lines passed from one country to the other were not defined, but the erection of clear and unmistakable lineside signs has put the matter beyond all doubt.

1950 January, “Crossing the Border”, in Railway Magazine, page 2:

The Ministry of Defence said on Wednesday the men had been killed on Tuesday in the Nahr-e Saraj district of Helmand province, on the border of Kandahar just north of the provincial capital Lashkar Gah.

2013, Nicholas Watt and Nick Hopkins, Afghanistan bomb: UK to 'look carefully' at use of vehicles(in The Guardian, 1 May 2013)

23 June 2018, Mattha Busb, The Independent, Jogger crosses US-Canada border by mistake, is held for two weeks in detention centre
A French tourist who accidentally crossed the border into the US from Canada during an evening jog was sent to a detention centre 125 miles away and held for two weeks until she was released.

The line or frontier area separating political or geographical regions.

the borders of the garden

upon the borders of these solitudes

1843, Jeremy Bentham, Principles of Morals and Legislation, Fragment on Government, Civil Code, Penal Law:

in the borders of death

a. 1678 (date written), Isaac Barrow, “(please specify the chapter name or sermon number). The Danger and Mischief of Delaying Reptentance”, in The Works of Dr. Isaac Barrow. […], volume (please specify |volume=I to VII), London: A[braham] J[ohn] Valpy, […], published 1830–1831, →OCLC:

There’s a nice frilly border around the picture frame.

a solid border around a table of figures

A decorative strip around the edge of something.

A strip of ground in which ornamental plants are grown.

(British, uncountable) border morris or border dancing; a vigorous style of traditional English dance originating from villages along the border between England and Wales, performed by a team of dancers usually with their faces disguised with black makeup.

(computing) A string that is both a prefix and a suffix of another particular string.

en-noun

border (countable and uncountable, plural borders)

аҳәаа

the line or frontier area separating various territories

orla

a decorative strip around the edge of something

záhon

a strip of ground in which ornamental plants are grown

Inherited from Middle English bordure, from Old French bordeure, of Germanic origin, from Frankish *bord, equivalent to modern French bord (“a border”) + -er.
Akin to Middle High German borte (“border, trim”), German Borte (“ribbon, trimming”). Doublet of bordure. More at board.
Further cognate to English board, Old Norse barð (“edge”), Swedish bård (“edge”), also English beard, German Bart (“beard”) (edge of the face) etc.


border

(transitive) To put a border on something.

(transitive) To form a border around; to bound.

Denmark borders Germany to the south.

(transitive) To lie on, or adjacent to, a border of.

Connecticut borders on Massachusetts.

(intransitive) To touch at a border (with on, upon, or with).

Wit which borders upon profaneness […]deserves to be branded as folly.

1671, John Tillotson, “Sermon II. The Folly of Scoffing at Religion. 2 Pet[er] III. 3.”, in The Works of the Most Reverend Dr. John Tillotson, Late Lord Archbishop of Canterbury: […], 8th edition, London: […] T. Goodwin, B[enjamin] Tooke, and J. Pemberton, […]; J. Round […], and J[acob] Tonson] […], published 1720, →OCLC:

(intransitive) To approach; to come near to; to verge (with on or upon).

en-verb

border (third-person singular simple present borders, present participle bordering, simple past and past participle bordered)

borders (present singular third-person)
bordering (participle present)
bordered (participle past)
bordered (past)

ohraničit

(transitive) to put a border on something

грани́ча

(transitive) to lie on, or adjacent to a border