[{"Bold_text": "noun", "List Items": ["a mounted attendant riding before or beside a carriage.", "(at a racetrack) a mounted rider accompanies or leads a racehorse to the post.", "a person who goes in advance of an automobile or person to clear a passage.", "a person who leads the way or is a member of a vanguard; forerunner.", "a person who rides out or forth, especially a scout, cowhand, ranch hand, or the like."]}]