"purple of Cassius" meaning in English

{
  "etymology_text": "Named for Andreas Cassius, a glassmaker from Potsdam who first described its creation.",
  "head_templates": [
    {
      "args": {
        "1": "-",
        "head": "purple of Cassius"
      },
      "expansion": "purple of Cassius (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"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Entries with translation boxes",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Italian translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Gold",
          "orig": "en:Gold",
          "parents": [
            "Transition metals",
            "Chemical elements",
            "Metals",
            "Matter",
            "Metallurgy",
            "Chemistry",
            "Nature",
            "Technology",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "2002, Philip Ball, The Elements: A Very Short Introduction, Oxford, published 2004, page 61:",
          "text": "Purple of Cassius was used not just by glassmakers but by porcelain manufacturers to make a fine red glaze.",
          "type": "quote"
        }
      ],
      "glosses": [
        "A pigment formed from gold and tin salts, used in glassmaking."
      ],
      "id": "en-purple_of_Cassius-en-noun-vcYSTvlV",
      "links": [
        [
          "gold",
          "gold"
        ],
        [
          "tin",
          "tin"
        ],
        [
          "salt",
          "salt"
        ]
      ],
      "raw_glosses": [
        "(historical) A pigment formed from gold and tin salts, used in glassmaking."
      ],
      "tags": [
        "historical",
        "uncountable"
      ],
      "translations": [
        {
          "code": "it",
          "lang": "Italian",
          "sense": "pigment",
          "word": "cassio"
        }
      ],
      "wikipedia": [
        "purple of Cassius"
      ]
    }
  ],
  "word": "purple of Cassius"
}

{
  "etymology_text": "Named for Andreas Cassius, a glassmaker from Potsdam who first described its creation.",
  "head_templates": [
    {
      "args": {
        "1": "-",
        "head": "purple of Cassius"
      },
      "expansion": "purple of Cassius (uncountable)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English eponyms",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with historical senses",
        "English terms with quotations",
        "English uncountable nouns",
        "Entries with translation boxes",
        "Pages with 1 entry",
        "Pages with entries",
        "Quotation templates to be cleaned",
        "Terms with Italian translations",
        "en:Gold"
      ],
      "examples": [
        {
          "ref": "2002, Philip Ball, The Elements: A Very Short Introduction, Oxford, published 2004, page 61:",
          "text": "Purple of Cassius was used not just by glassmakers but by porcelain manufacturers to make a fine red glaze.",
          "type": "quote"
        }
      ],
      "glosses": [
        "A pigment formed from gold and tin salts, used in glassmaking."
      ],
      "links": [
        [
          "gold",
          "gold"
        ],
        [
          "tin",
          "tin"
        ],
        [
          "salt",
          "salt"
        ]
      ],
      "raw_glosses": [
        "(historical) A pigment formed from gold and tin salts, used in glassmaking."
      ],
      "tags": [
        "historical",
        "uncountable"
      ],
      "wikipedia": [
        "purple of Cassius"
      ]
    }
  ],
  "translations": [
    {
      "code": "it",
      "lang": "Italian",
      "sense": "pigment",
      "word": "cassio"
    }
  ],
  "word": "purple of Cassius"
}