"mouche du vinaigre" meaning in French

{
  "forms": [
    {
      "form": "mouches de vinaigre",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "f",
        "2": "mouches de vinaigre"
      },
      "expansion": "mouche du vinaigre f (plural mouches de vinaigre)",
      "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": "lifeform",
          "langcode": "fr",
          "name": "Dipterans",
          "orig": "fr:Dipterans",
          "parents": [
            "Insects",
            "Arthropods",
            "Animals",
            "Lifeforms",
            "All topics",
            "Life",
            "Fundamental",
            "Nature"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "fruit fly"
      ],
      "id": "en-mouche_du_vinaigre-fr-noun-t1tmsx7l",
      "links": [
        [
          "fruit fly",
          "fruit fly"
        ]
      ],
      "synonyms": [
        {
          "word": "drosophile"
        }
      ],
      "tags": [
        "feminine"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/muʃ dy vi.nɛɡʁ/"
    }
  ],
  "word": "mouche du vinaigre"
}

{
  "forms": [
    {
      "form": "mouches de vinaigre",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "f",
        "2": "mouches de vinaigre"
      },
      "expansion": "mouche du vinaigre f (plural mouches de vinaigre)",
      "name": "fr-noun"
    }
  ],
  "lang": "French",
  "lang_code": "fr",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "French countable nouns",
        "French entries with incorrect language header",
        "French feminine nouns",
        "French lemmas",
        "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:Dipterans"
      ],
      "glosses": [
        "fruit fly"
      ],
      "links": [
        [
          "fruit fly",
          "fruit fly"
        ]
      ],
      "synonyms": [
        {
          "word": "drosophile"
        }
      ],
      "tags": [
        "feminine"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/muʃ dy vi.nɛɡʁ/"
    }
  ],
  "word": "mouche du vinaigre"
}