A chief overlies a bordure, unless the bordure is added to a coat that previously included a chief, or so it is often said. In practice, the order in which things are to overlie each other can usually be inferred …

The meaning of BORDURE is a border on a heraldic shield.

bordure, n. meanings, etymology, pronunciation and more in the Oxford English Dictionary

bordure (plural bordures) An edge, boundary, or demarcation: (heraldry) A heraldic border; a bordure. A decorative border or edge.

bordure in British English (ˈbɔːdjʊə) noun heraldry the outer edge of a shield, esp when decorated distinctively

bordure (ˈbɔːdjʊə) n (Heraldry) heraldry the outer edge of a shield, esp when decorated distinctively [C15: from Old French; see border]

A bordure is an ordinary in heraldry, consisting of a narrow band or border that encircles the edge of a shield, typically measuring one-eighth to one-twelfth of the shield's width.

BORDURE translations: edge, border, edging, frieze, fringe, kerb, curb, welt. Learn more in the Cambridge French-English Dictionary.

Because it has only one edge, a bordure may not be “dancetty”, nor may it be fimbriated, cotised, or voided. The bordure has no diminutives in present Society heraldry.

'Bordure' means a broad border around something, especially an escutcheon. It is often used in heraldry to describe the decorative borders around coats of arms, flags, and other emblems.