[{"Bold_text": "noun", "List Items": ["Chemistry.any of certain metallic sulfates of glassy appearance, as copper sulfate or blue vitriol blue vitriol,iron sulfate or green vitriol green vitriol,zinc sulfate or white vitriol white vitriol,etc.", "oil of vitriol oil of vitriol;sulfuric acid.", "something highly caustic or severe in effect, as criticism."]}, {"Bold_text": "verb (used with object)", "List Items": ["to treat with or as with vitriol, especially sulfuric acid."]}]