[{"Bold_text": "noun", "List Items": ["a finback or rorqual.", "a wild or semiwild hog with a ridgelike back , common in the southern U.S.", "a sharp narrow ridge or range of hills."]}, {"Bold_text": "adjective", "List Items": ["Alsora?zor·backed?,ra?zor-backed?. having a sharp ridge along the back ."]}]