vitriol n 1: (H2SO4) a highly corrosive acid made from sulfur dioxide; widely used in the chemical industry [syn: {oil of vitriol}, {sulfuric acid}, {sulphuric acid}] 2: abusive or venomous language used to express blame or censure or bitter deep-seated ill will [syn: {vituperation}, {invective}] v 1: expose to the effects of vitriol or injure with vitriol 2: subject to bitter verbal abuse [also: {vitriolling}, {vitriolled}] vitriolled See {vitriol}