borderyoudaoicibaDictYouDict[border 词源字典]
border: [14] English acquired border from Old French bordure. This came from the common Romance verb *bordāre ‘border’, which was based on *bordus ‘edge’, a word of Germanic origin whose source, *borthaz, was the same as that of English board in the sense ‘side of a ship’.
=> board[border etymology, border origin, 英语词源]
border (n.)youdaoicibaDictYouDict
mid-14c., from Old French bordure "seam, edge of a shield, border," from Frankish *bord or a similar Germanic source (compare Old English bord "side;" see board (n.2)). The geopolitical sense first attested 1530s, in Scottish (replacing earlier march), from The Borders, name of the district adjoining the boundary between England and Scotland.
border (v.)youdaoicibaDictYouDict
c. 1400, "to put a border on;" 1640s as "to lie on the border of," from border (n.). Related: Bordered; bordering.