[{"Bold_text": "noun", "List Items": ["a portable barrier over which contestants must leap in certain running races, usually a wooden frame with a hinged inner frame that swings down under impact to prevent injury to a runner who does not clear it.", "hurdles,(used with a singular verb)a race in which contestants must leap over a number of such barriers placed at specific intervals around the track.Compare high hurdles high hurdles, low hurdles low hurdles.", "any of various vertical barriers, as a hedge, low wall, or section of fence, over which horses must jump in certain types of turf races, as a steeplechase, but especially an artificial barrier.", "a difficult problem to be overcome; obstacle.", "Chiefly British.a movable rectangular frame of interlaced twigs, crossed bars, or the like, as for a temporary fence.", "a frame or sled on which criminals, especially traitors, were formerly drawn to the place of execution."]}, {"Bold_text": "verb (used with object)", "List Items": ["to leap over (a hurdle, barrier, fence, etc.), as in a race.", "to master (a difficulty, problem, etc.); overcome.", "to construct with hurdles; enclose with hurdles."]}, {"Bold_text": "verb (used without object)", "List Items": ["to leap over a hurdle or other barrier."]}]