"oil of vitriol" meaning in English

{
  "etymology_text": "So called from its oily consistency and from its forming the \"vitriols\" or sulfates. This term was coined by the 8th-century alchemist Jabir ibn Hayyan, the chemical's probable discoverer.",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "oil of vitriol (uncountable)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
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          "source": "w"
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        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Inorganic compounds",
          "orig": "en:Inorganic compounds",
          "parents": [
            "Matter",
            "Chemistry",
            "Nature",
            "Sciences",
            "All topics",
            "Fundamental"
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          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Sulfur",
          "orig": "en:Sulfur",
          "parents": [
            "Chalcogens",
            "Chemical elements",
            "Matter",
            "Chemistry",
            "Nature",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Sulfuric acid."
      ],
      "id": "en-oil_of_vitriol-en-noun-gXcUUs7q",
      "links": [
        [
          "inorganic chemistry",
          "inorganic chemistry"
        ],
        [
          "Sulfuric acid",
          "sulfuric acid"
        ]
      ],
      "raw_glosses": [
        "(inorganic chemistry, dated) Sulfuric acid."
      ],
      "synonyms": [
        {
          "word": "vitriol"
        }
      ],
      "tags": [
        "dated",
        "uncountable"
      ],
      "topics": [
        "chemistry",
        "inorganic-chemistry",
        "natural-sciences",
        "physical-sciences"
      ],
      "translations": [
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "alternative name for \"sulphuric acid\"",
          "word": "vihtrilliöljy"
        }
      ]
    }
  ],
  "word": "oil of vitriol"
}

{
  "etymology_text": "So called from its oily consistency and from its forming the \"vitriols\" or sulfates. This term was coined by the 8th-century alchemist Jabir ibn Hayyan, the chemical's probable discoverer.",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "oil of vitriol (uncountable)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
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        "English nouns",
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        "Pages with 1 entry",
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        "Terms with Finnish translations",
        "en:Inorganic compounds",
        "en:Sulfur"
      ],
      "glosses": [
        "Sulfuric acid."
      ],
      "links": [
        [
          "inorganic chemistry",
          "inorganic chemistry"
        ],
        [
          "Sulfuric acid",
          "sulfuric acid"
        ]
      ],
      "raw_glosses": [
        "(inorganic chemistry, dated) Sulfuric acid."
      ],
      "tags": [
        "dated",
        "uncountable"
      ],
      "topics": [
        "chemistry",
        "inorganic-chemistry",
        "natural-sciences",
        "physical-sciences"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "vitriol"
    }
  ],
  "translations": [
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "alternative name for \"sulphuric acid\"",
      "word": "vihtrilliöljy"
    }
  ],
  "word": "oil of vitriol"
}