Stucco
a fine plaster used for coating walls. It is usually made of pure lime slaked and settled, mixed with clean sand. Stucco varies in quality and composition with the purpose for which it is intended. For internal decoration gypsum and pounded marble enter into its composition, as well as gelatine or glue in solution. For external work the stucco employed is of a coarser kind, and is variously prepared, the different sorts being generally distinguished by the name of cements. Also the third coat of plastering when prepared for painting, and a popular name for plaster of Paris or gypsum.