"1e" meaning in Néerlandais

{
  "categories": [
    {
      "kind": "other",
      "name": "Abréviations en néerlandais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Adjectifs en néerlandais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Lemmes en néerlandais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Néerlandais",
      "orig": "néerlandais",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "(Abréviation) Abréviation de eerste utilisant 1."
  ],
  "lang": "Néerlandais",
  "lang_code": "nl",
  "pos": "adj",
  "pos_title": "Adjectif",
  "senses": [
    {
      "alt_of": [
        {
          "word": "eerste"
        }
      ],
      "glosses": [
        "Variante orthographique de eerste. Premier, 1ᵉʳ."
      ],
      "id": "fr-1e-nl-adj-ABe89fRx",
      "tags": [
        "alt-of"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\eːɾ.stǝ\\"
    }
  ],
  "word": "1e"
}

{
  "categories": [
    "Abréviations en néerlandais",
    "Adjectifs en néerlandais",
    "Lemmes en néerlandais",
    "néerlandais"
  ],
  "etymology_texts": [
    "(Abréviation) Abréviation de eerste utilisant 1."
  ],
  "lang": "Néerlandais",
  "lang_code": "nl",
  "pos": "adj",
  "pos_title": "Adjectif",
  "senses": [
    {
      "alt_of": [
        {
          "word": "eerste"
        }
      ],
      "glosses": [
        "Variante orthographique de eerste. Premier, 1ᵉʳ."
      ],
      "tags": [
        "alt-of"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\eːɾ.stǝ\\"
    }
  ],
  "word": "1e"
}