corner molding

corner bead, angle bead, angle staff, corner guard, corner molding, plaster bead, staff bead

corner bead, 2 1. Any vertical molding, usually a plain, filleted, or quirked bead, used to protect the external angle of two intersecting surfaces. 2. A strip of formed galvanized iron, sometimes combined with a strip of metal lath, placed on corners before plastering to reinforce them.