"French purple" meaning in English

{
  "forms": [
    {
      "form": "French purples",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "-",
        "2": "s"
      },
      "expansion": "French purple (usually uncountable, plural French purples)",
      "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": "topical",
          "langcode": "en",
          "name": "Dyes",
          "orig": "en:Dyes",
          "parents": [
            "Matter",
            "Pigments",
            "Chemistry",
            "Nature",
            "Colors",
            "Sciences",
            "All topics",
            "Light",
            "Vision",
            "Fundamental",
            "Energy",
            "Senses",
            "Perception",
            "Body",
            "Human"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A dyestuff obtained from certain lichen known as orchella weeds, used for colouring woollen and silken fabrics, without the aid of mordants."
      ],
      "id": "en-French_purple-en-noun-BqKJM4tn",
      "links": [
        [
          "dyestuff",
          "dyestuff"
        ],
        [
          "lichen",
          "lichen"
        ],
        [
          "mordant",
          "mordant"
        ]
      ],
      "related": [
        {
          "alt": "archil, orchil, lacmus",
          "word": "orcein"
        },
        {
          "taxonomic": "Roccella tinctoria",
          "word": "archil lichen"
        },
        {
          "word": "orcinol"
        }
      ],
      "tags": [
        "uncountable",
        "usually"
      ]
    }
  ],
  "word": "French purple"
}

{
  "forms": [
    {
      "form": "French purples",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "-",
        "2": "s"
      },
      "expansion": "French purple (usually uncountable, plural French purples)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "alt": "archil, orchil, lacmus",
      "word": "orcein"
    },
    {
      "taxonomic": "Roccella tinctoria",
      "word": "archil lichen"
    },
    {
      "word": "orcinol"
    }
  ],
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English uncountable nouns",
        "Entries missing English vernacular names of taxa",
        "en:Dyes"
      ],
      "glosses": [
        "A dyestuff obtained from certain lichen known as orchella weeds, used for colouring woollen and silken fabrics, without the aid of mordants."
      ],
      "links": [
        [
          "dyestuff",
          "dyestuff"
        ],
        [
          "lichen",
          "lichen"
        ],
        [
          "mordant",
          "mordant"
        ]
      ],
      "tags": [
        "uncountable",
        "usually"
      ]
    }
  ],
  "word": "French purple"
}