noun

border

border, boundary, edge, frontier

We crossed the border into Canada.

We crossed the border into Canada.

The picture has a blue border.

The picture has a blue border.

((the border)) ((between A and B)) the line separating two places The border between the US and Mexico is very long.

((a border)) ((of sth.)) a decorative edge on something The blanket has a border of lace.

Synonyms: boundary, frontier, edge, margin

From Old French 'bordure' (edging), from 'bord' (edge, board).

Imagine a 'board' that acts as the edge or boundary of something.

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