Wiktionary
picture molding
n. (context finish carpentry interior decorating English) A horizontal molding attached to a wall intended to facilitate the hanging of decorative objects.
Usage examples of "picture molding".
So, in an embalming room with cabbage roses in the wallpaper and a picture molding beneath its high ceiling, in a white frame house of a type she understood, Clarice Starling met with her first direct evidence of Buffalo Bill.
Wine-colored brocade above mahogany wainscoting covered the walls, which were further embellished with giant tapestries and paintings in baroque gold frames, which hung by thick tasseled ropes from a picture molding high overhead.