[{"Bold_text": "noun", "List Items": ["Geometry.(in Euclidean geometry) any rectilinear quadrilateral plane figure not a parallelogram.a quadrilateral plane figure of which no two sides are parallel.British. trapezoid(def1a) trapezoid(def1a).", "(in Euclidean geometry) any rectilinear quadrilateral plane figure not a parallelogram.", "a quadrilateral plane figure of which no two sides are parallel.", "British. trapezoid(def1a) trapezoid(def1a).", "Anatomy.a bone in the wrist that articulates with the metacarpal bone of the thumb."]}]