stucco
1. An exterior finish, composed of some combination of portland cement, lime, and sand, which are mixed with water, which dries to a very hard textured surface.
3. A fine plaster used for decorative work, moldings, or cornices.
4. A partially or fully calcined gypsum that has not yet been processed into a finished product.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.