English

interborder

From inter- + border.

Proto-Indo-European *h₁én ‘in’

Proto-Indo-European *h₁entér ‘between’

Proto-Italic *n̥ter ‘between’

Latin inter ‘between’

Frankish *bord

Old French bordeure

Middle English bordure ‘a heraldic border’

Today it means

adj Between borders.

Language periods are conventional ranges, not dates for this word.

Etymograph / interborder