[{"Bold_text": "noun", "List Items": ["an external solid angle of a wall or the like.", "one of the stones forming it; cornerstone.", "any of various bricks of standard shape for corners of brick walls or the like.", "a wedge-shaped piece of wood, stone, or other material, used for any of various purposes.", "Printing.a wedge of wood or metal for securing type in a chase."]}, {"Bold_text": "verb (used with object)", "List Items": ["to provide with quoins, as a corner of a wall.", "to secure or raise with a quoin or wedge."]}]