"miller's grape" meaning in English

{
  "etymology_text": "From the powdery white appearance of the leaves, as if covered in flour.",
  "head_templates": [
    {
      "args": {
        "1": "?"
      },
      "expansion": "miller's grape",
      "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": "lifeform",
          "langcode": "en",
          "name": "Grape cultivars",
          "orig": "en:Grape cultivars",
          "parents": [
            "Grapevines",
            "Wines",
            "Grape family plants",
            "Wine",
            "Plants",
            "Alcoholic beverages",
            "Lifeforms",
            "Beverages",
            "Recreational drugs",
            "All topics",
            "Life",
            "Drinking",
            "Food and drink",
            "Liquids",
            "Drugs",
            "Fundamental",
            "Nature",
            "Human behaviour",
            "Matter",
            "Pharmacology",
            "Human",
            "Chemistry",
            "Biochemistry",
            "Medicine",
            "Sciences",
            "Biology"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A hardy grape variety, cultivated in Burgundy for making wine."
      ],
      "id": "en-miller's_grape-en-noun-rbbSqKOk",
      "links": [
        [
          "hardy",
          "hardy"
        ],
        [
          "Burgundy",
          "Burgundy"
        ],
        [
          "wine",
          "wine"
        ]
      ]
    }
  ],
  "word": "miller's grape"
}

{
  "etymology_text": "From the powdery white appearance of the leaves, as if covered in flour.",
  "head_templates": [
    {
      "args": {
        "1": "?"
      },
      "expansion": "miller's grape",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English nouns with unknown or uncertain plurals",
        "en:Grape cultivars"
      ],
      "glosses": [
        "A hardy grape variety, cultivated in Burgundy for making wine."
      ],
      "links": [
        [
          "hardy",
          "hardy"
        ],
        [
          "Burgundy",
          "Burgundy"
        ],
        [
          "wine",
          "wine"
        ]
      ]
    }
  ],
  "word": "miller's grape"
}