[{"Bold_text": "noun", "List Items": ["a racetrack dry and hard enough for optimum speed.", "a railroad track for express trains.", "Informal.a situation or course of action that is intensely pressured or competitive, especially one in which a person advances rapidly to a higher level in a business or profession:With two promotions in six months, he seems to have chosen the fast track."]}, {"Bold_text": "verb (used with or without object)", "List Items": ["to advance or develop rapidly."]}, {"Bold_text": "adjective", "List Items": ["of or relating to the fast track."]}]