The term 'ornamental border' can be broken down into two crossword solutions: 'DADO' and 'orphrey'. A DADO is a type of architectural feature, typically found in the form of a rectangular groove cut into a wall or other surface. It is usually used to provide a decorative border or to separate two different materials. An orphrey is a type of ornamental band or strip of fabric, often embroidered with intricate designs, which is used to decorate clothing, vestments, and other items. Both DADO and orphrey are commonly used to create ornamental borders.