Molding/ˈməʊldɪŋ/ Definition 1 of 3Pro Tip 1/3Home Decor Molding is often discussed in interior design to add style to rooms. They chose crown molding to enhance the living room's ceilings. Pro Tip 2/3Material Variety Molding can be made from wood, plastic, stone, or plaster among others. The wooden molding matched their hardwood floors perfectly. Pro Tip 3/3Finish & Color Painting or staining molding can dramatically change a room's appearance. We painted the ceiling molding white for a crisp finish.