- Gordon Campbell
French term for openwork, used in the decorative arts principally with reference to metalwork, bookbinding and heraldry. In metalwork, it denotes the piercing or perforation of sheet metal, a practice found as early as the ancient Egyptian period. In bookbinding, the term ajouré binding refers to a style that emerged in late 15th-century Venice in which bindings were embellished with pierced or translucent patterns, typically open designs of foliage. In heraldry, an ...