[{"Bold_text": "adjective", "List Items": ["of or relating to the night ( diurnal ).", "done, occurring, or coming at night:nocturnal visit.Synonyms: nighttime", "active at night ( diurnal ):nocturnal animals.", "opening by night and closing by day, as certain flowers ( diurnal )."]}, {"Bold_text": "noun", "List Items": ["Archaic.an astrolabe for telling time at night or for determining latitude by the position of certain stars in reference to Polaris."]}]