[{"Bold_text": "verb (used without object)", "List Items": ["to carry on intensive and thorough research for data, information, or the like; investigate:to delve into the issue of prison reform.Synonyms: explore , examine , probe , inquire , research", "Archaic.to dig, as with a spade."]}, {"Bold_text": "verb (used with object)", "List Items": ["Archaic.to dig; excavate."]}]