[{"Bold_text": "noun", "List Items": ["a person employed to extinguish or prevent fires; firefighter.", "a person employed to tend fires; stoker.", "Railroads.a person employed to fire lubricate a steam locomotive.a person employed to assist the engineer of a diesel or electric locomotive.", "a person employed to fire lubricate a steam locomotive.", "a person employed to assist the engineer of a diesel or electric locomotive.", "U.S. Navy.an enlisted person assigned to the care and operation of a ship's machinery.", "British Mining. fire boss fire boss.", "Baseball. relief pitcher relief pitcher."]}]