[{"Bold_text": "noun", "List Items": ["the point a pin .", "a trifle; pinhead.", "a tiny spot or sharp point .Synonyms: define , identify , localize , spot"]}, {"Bold_text": "verb (used with object)", "List Items": ["to locate or describe exactly or precisely:to pinpoint the problem."]}, {"Bold_text": "adjective", "List Items": ["exact; precise:pinpoint accuracy."]}]