Diapering

Arabesque-like diapering on the field of the shield of the See of Worcester: Argent, ten torteaux four, three, two, and one
Detail of Chinese carved lacquer snuff bottle with Children at Play, and three types of diaper backgrounds, representing ground, water and sky. 18th century

Diaper is any of a wide range of decorative patterns used in a variety of works of art, such as stained glass, heraldic shields, architecture, and silverwork. Its chief use is in the enlivening of plain surfaces.