"d’" meaning in Flamand occidental

{
  "categories": [
    {
      "kind": "other",
      "name": "Prépositions en franc-comtois",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Flamand occidental",
      "orig": "flamand occidental",
      "parents": [],
      "source": "w"
    }
  ],
  "lang": "Flamand occidental",
  "lang_code": "vls",
  "pos": "article",
  "pos_id": "vls-flex-art-déf-1",
  "pos_title": "Forme d’article défini",
  "senses": [
    {
      "form_of": [
        {
          "word": "de"
        }
      ],
      "glosses": [
        "Élision de l'article défini de devant une voyelle."
      ],
      "id": "fr-d’-vls-article-UMdq6hvY"
    }
  ],
  "tags": [
    "definite",
    "form-of"
  ],
  "word": "d’"
}

{
  "categories": [
    "Prépositions en franc-comtois",
    "flamand occidental"
  ],
  "lang": "Flamand occidental",
  "lang_code": "vls",
  "pos": "article",
  "pos_id": "vls-flex-art-déf-1",
  "pos_title": "Forme d’article défini",
  "senses": [
    {
      "form_of": [
        {
          "word": "de"
        }
      ],
      "glosses": [
        "Élision de l'article défini de devant une voyelle."
      ]
    }
  ],
  "tags": [
    "definite",
    "form-of"
  ],
  "word": "d’"
}