"en primeur" meaning in French

{
  "head_templates": [
    {
      "args": {},
      "expansion": "en primeur",
      "name": "fr-adv"
    }
  ],
  "lang": "French",
  "lang_code": "fr",
  "pos": "adv",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "French entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "fr",
          "name": "Wine",
          "orig": "fr:Wine",
          "parents": [
            "Alcoholic beverages",
            "Beverages",
            "Recreational drugs",
            "Drinking",
            "Food and drink",
            "Liquids",
            "Drugs",
            "Human behaviour",
            "All topics",
            "Matter",
            "Pharmacology",
            "Human",
            "Fundamental",
            "Chemistry",
            "Nature",
            "Biochemistry",
            "Medicine",
            "Sciences",
            "Biology"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "either before a wine is bottled or while it is in bottle but has not yet fully matured (used in connection with buying new wine)"
      ],
      "id": "en-en_primeur-fr-adv-~6T0pZsi",
      "links": [
        [
          "wine",
          "wine"
        ],
        [
          "bottled",
          "bottled"
        ],
        [
          "bottle",
          "bottle"
        ],
        [
          "matured",
          "matured"
        ]
      ],
      "raw_glosses": [
        "(wine) either before a wine is bottled or while it is in bottle but has not yet fully matured (used in connection with buying new wine)"
      ],
      "topics": [
        "beverages",
        "food",
        "lifestyle",
        "oenology",
        "wine"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ɑ̃ pʁi.mœʁ/"
    }
  ],
  "word": "en primeur"
}

{
  "head_templates": [
    {
      "args": {},
      "expansion": "en primeur",
      "name": "fr-adv"
    }
  ],
  "lang": "French",
  "lang_code": "fr",
  "pos": "adv",
  "senses": [
    {
      "categories": [
        "French adverbs",
        "French entries with incorrect language header",
        "French lemmas",
        "French multiword terms",
        "French terms with IPA pronunciation",
        "fr:Wine"
      ],
      "glosses": [
        "either before a wine is bottled or while it is in bottle but has not yet fully matured (used in connection with buying new wine)"
      ],
      "links": [
        [
          "wine",
          "wine"
        ],
        [
          "bottled",
          "bottled"
        ],
        [
          "bottle",
          "bottle"
        ],
        [
          "matured",
          "matured"
        ]
      ],
      "raw_glosses": [
        "(wine) either before a wine is bottled or while it is in bottle but has not yet fully matured (used in connection with buying new wine)"
      ],
      "topics": [
        "beverages",
        "food",
        "lifestyle",
        "oenology",
        "wine"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ɑ̃ pʁi.mœʁ/"
    }
  ],
  "word": "en primeur"
}