Meaning

noun (H2SO4) a highly corrosive acid made from sulfur dioxide; widely used in the chemical industry

noun abusive or venomous language used to express blame or censure or bitter deep-seated ill will

verb expose to the effects of vitriol or injure with vitriol

originFrom Middle English vitriol, from Old French vitriol, from Medieval Latin vitriolum (“sulfuric acid”), from vitrum (“glass”).

Etymology from Wiktionary, CC BY-SA 3.0