[{"Bold_text": "adjective", "List Items": ["Mathematics.connecting two nonadjacent angles or vertices of a polygon or polyhedron, as a straight line.extending from one edge of a solid figure to an opposite edge, as a plane.", "connecting two nonadjacent angles or vertices of a polygon or polyhedron, as a straight line.", "extending from one edge of a solid figure to an opposite edge, as a plane.", "having an oblique direction.", "having oblique lines, ridges, markings, etc."]}, {"Bold_text": "noun", "List Items": ["a diagonal line or plane.", "virgule .", "a diagonal row, part, pattern, etc.", "Manège.(of a horse at a trot) the foreleg and the hind leg, diagonally opposite, which move forward simultaneously.", "diagonal cloth diagonal cloth.", "Mathematics.a set of entries in a square matrix running either from upper left to lower rightmain diagonal, or principal diagonalor lower left to upper rightsecondary diagonal.", "Chess.one of the oblique lines of squares on a chessboard:He advanced his bishop along the open diagonal."]}, {"Bold_text": "Adjective", "List Items": null}, {"Bold_text": "Noun", "List Items": null}]