‖n. [ It., chalk, plaster. ] 1. Plaster of Paris, or gypsum, esp. as prepared for use in painting, or in making bas-reliefs and the like; by extension, a plasterlike or pasty material spread upon a surface to fit it for painting or gilding, or a surface so prepared. [ Webster 1913 Suppl. ]

2. A work of art done in gesso. [ Obs. ] [ Webster 1913 Suppl. ]

‖ [ It., hard plaster. ] A variety of gesso which when dried becomes hard and durable, often used in making bas-relief casts, which are colored and mounted in elaborate frames. [ Webster 1913 Suppl. ]