A protruding ornament (on a binding), usually of metal. When applied to a binding it serves a protective function.
A protruding ornament (on a binding), usually of metal. When applied to a binding it serves a protective function. Metalwork plaques are known to have adorned bindings from the Early Christian period on, but prominent raised bosses appear to have become popular during the fifteenth century.
- Arabic:مسمار كبير
- French:Boulon; Ombilic (center boss); Bossette; Bouillon; Cabochon
- German:Beschlag (Mittelbeschlag, Eckbeschlag)
- Italian:Borchia; Borchia centrale; Bullone; Brocca; Coppa; Bulletta
- Spanish:bullón; cabujón
Michelle Brown. Understanding Illuminated Manuscripts (Malibu, CA: J. Paul Getty Museum in association with the British Library, c1994).