Pottery that has been treated with semiliquid clay, or slip. The technique was originally used to cover defects in body color, but later evolved into decorative techniques such as sgraffito, carving, painting, trailing, marbling, and inlay. In sgraffito a pattern is incised through the slip to reveal the different body color underneath. The Staffordshire potters in 17th-cent. Britain were famous for the decorative figures, flowers, and patterns they created by using dotted and trailed slip.