"beurre noir" meaning in French

{
  "forms": [
    {
      "form": "beurres noirs",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "m"
      },
      "expansion": "beurre noir m (plural beurres noirs)",
      "name": "fr-noun"
    }
  ],
  "lang": "French",
  "lang_code": "fr",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "French entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "fr",
          "name": "Cooking",
          "orig": "fr:Cooking",
          "parents": [
            "Food and drink",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "derived": [
        {
          "word": "œil au beurre noir"
        }
      ],
      "glosses": [
        "melted butter that is cooked over low heat until the milk solids turn a very dark brown, black butter"
      ],
      "id": "en-beurre_noir-fr-noun-i~HhC7a2",
      "links": [
        [
          "cooking",
          "cooking#Noun"
        ],
        [
          "butter",
          "butter"
        ],
        [
          "black butter",
          "black butter"
        ]
      ],
      "raw_glosses": [
        "(cooking) melted butter that is cooked over low heat until the milk solids turn a very dark brown, black butter"
      ],
      "tags": [
        "masculine"
      ],
      "topics": [
        "cooking",
        "food",
        "lifestyle"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/bœʁ nwaʁ/"
    },
    {
      "audio": "LL-Q150 (fra)-Lepticed7-beurre noir.wav",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/8/80/LL-Q150_%28fra%29-Lepticed7-beurre_noir.wav/LL-Q150_%28fra%29-Lepticed7-beurre_noir.wav.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/8/80/LL-Q150_%28fra%29-Lepticed7-beurre_noir.wav/LL-Q150_%28fra%29-Lepticed7-beurre_noir.wav.ogg"
    },
    {
      "audio": "LL-Q150 (fra)-DenisdeShawi-beurre noir.wav",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/d/d1/LL-Q150_%28fra%29-DenisdeShawi-beurre_noir.wav/LL-Q150_%28fra%29-DenisdeShawi-beurre_noir.wav.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/d/d1/LL-Q150_%28fra%29-DenisdeShawi-beurre_noir.wav/LL-Q150_%28fra%29-DenisdeShawi-beurre_noir.wav.ogg"
    }
  ],
  "word": "beurre noir"
}

{
  "derived": [
    {
      "word": "œil au beurre noir"
    }
  ],
  "forms": [
    {
      "form": "beurres noirs",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "m"
      },
      "expansion": "beurre noir m (plural beurres noirs)",
      "name": "fr-noun"
    }
  ],
  "lang": "French",
  "lang_code": "fr",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "French countable nouns",
        "French entries with incorrect language header",
        "French lemmas",
        "French masculine nouns",
        "French multiword terms",
        "French nouns",
        "French nouns with red links in their headword lines",
        "French terms with IPA pronunciation",
        "Pages with 1 entry",
        "Pages with entries",
        "fr:Cooking"
      ],
      "glosses": [
        "melted butter that is cooked over low heat until the milk solids turn a very dark brown, black butter"
      ],
      "links": [
        [
          "cooking",
          "cooking#Noun"
        ],
        [
          "butter",
          "butter"
        ],
        [
          "black butter",
          "black butter"
        ]
      ],
      "raw_glosses": [
        "(cooking) melted butter that is cooked over low heat until the milk solids turn a very dark brown, black butter"
      ],
      "tags": [
        "masculine"
      ],
      "topics": [
        "cooking",
        "food",
        "lifestyle"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/bœʁ nwaʁ/"
    },
    {
      "audio": "LL-Q150 (fra)-Lepticed7-beurre noir.wav",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/8/80/LL-Q150_%28fra%29-Lepticed7-beurre_noir.wav/LL-Q150_%28fra%29-Lepticed7-beurre_noir.wav.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/8/80/LL-Q150_%28fra%29-Lepticed7-beurre_noir.wav/LL-Q150_%28fra%29-Lepticed7-beurre_noir.wav.ogg"
    },
    {
      "audio": "LL-Q150 (fra)-DenisdeShawi-beurre noir.wav",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/d/d1/LL-Q150_%28fra%29-DenisdeShawi-beurre_noir.wav/LL-Q150_%28fra%29-DenisdeShawi-beurre_noir.wav.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/d/d1/LL-Q150_%28fra%29-DenisdeShawi-beurre_noir.wav/LL-Q150_%28fra%29-DenisdeShawi-beurre_noir.wav.ogg"
    }
  ],
  "word": "beurre noir"
}