"French grey" meaning in English

{
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "French grey (uncountable)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "attestations": [
        {
          "date": "from 16th c.",
          "references": []
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "langcode": "en",
          "name": "Greys",
          "orig": "en:Greys",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "bold_text_offsets": [
            [
              13,
              24
            ]
          ],
          "ref": "1953, Raymond Chandler, The Long Goodbye, Penguin, published 2010, page 130:",
          "text": "The door was French grey outside with raised metal lettering, as clean and sharp as a new knife.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A pale dove grey."
      ],
      "id": "en-French_grey-en-noun-geSvTT23",
      "links": [
        [
          "dove grey",
          "dove grey"
        ]
      ],
      "tags": [
        "uncountable"
      ]
    }
  ],
  "word": "French grey"
}

{
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "French grey (uncountable)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "attestations": [
        {
          "date": "from 16th c.",
          "references": []
        }
      ],
      "categories": [
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with quotations",
        "English uncountable nouns",
        "Pages with 1 entry",
        "Pages with entries",
        "Quotation templates to be cleaned",
        "en:Greys"
      ],
      "examples": [
        {
          "bold_text_offsets": [
            [
              13,
              24
            ]
          ],
          "ref": "1953, Raymond Chandler, The Long Goodbye, Penguin, published 2010, page 130:",
          "text": "The door was French grey outside with raised metal lettering, as clean and sharp as a new knife.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A pale dove grey."
      ],
      "links": [
        [
          "dove grey",
          "dove grey"
        ]
      ],
      "tags": [
        "uncountable"
      ]
    }
  ],
  "word": "French grey"
}