<p><strong>Noun</strong></p><ul><li>plural <em>ges·soes</em></li><li>gypsum or plaster of Paris prepared with glue for use as a surface for painting</li><li>any plasterlike preparation to prepare a surface for painting, gilding, etc.</li><li>a prepared surface of plaster or plasterlike material for painting, gilding, etc.</li></ul>