"illégible" meaning in French

{
  "forms": [
    {
      "form": "illégibles",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "illégible (plural illégibles)",
      "name": "fr-adj"
    }
  ],
  "lang": "French",
  "lang_code": "fr",
  "pos": "adj",
  "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"
        }
      ],
      "examples": [
        {
          "english": "This letter is illegible.",
          "text": "Cette lettre est illégible.",
          "type": "example"
        }
      ],
      "glosses": [
        "illegible, unreadable"
      ],
      "id": "en-illégible-fr-adj-EhajNBYh",
      "links": [
        [
          "illegible",
          "illegible"
        ],
        [
          "unreadable",
          "unreadable"
        ]
      ],
      "raw_glosses": [
        "(rare) illegible, unreadable"
      ],
      "synonyms": [
        {
          "word": "illisible"
        }
      ],
      "tags": [
        "rare"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/i(l).le.ʒibl/"
    }
  ],
  "word": "illégible"
}

{
  "forms": [
    {
      "form": "illégibles",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "illégible (plural illégibles)",
      "name": "fr-adj"
    }
  ],
  "lang": "French",
  "lang_code": "fr",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        "French 3-syllable words",
        "French adjectives",
        "French entries with incorrect language header",
        "French lemmas",
        "French terms with IPA pronunciation",
        "French terms with rare senses",
        "French terms with usage examples",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "examples": [
        {
          "english": "This letter is illegible.",
          "text": "Cette lettre est illégible.",
          "type": "example"
        }
      ],
      "glosses": [
        "illegible, unreadable"
      ],
      "links": [
        [
          "illegible",
          "illegible"
        ],
        [
          "unreadable",
          "unreadable"
        ]
      ],
      "raw_glosses": [
        "(rare) illegible, unreadable"
      ],
      "synonyms": [
        {
          "word": "illisible"
        }
      ],
      "tags": [
        "rare"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/i(l).le.ʒibl/"
    }
  ],
  "word": "illégible"
}