"-n-" meaning in French

{
  "head_templates": [
    {
      "args": {
        "1": "fr",
        "2": "interfix"
      },
      "expansion": "-n-",
      "name": "head"
    }
  ],
  "lang": "French",
  "lang_code": "fr",
  "pos": "interfix",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "French entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "French interfixes",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "english": "Javanese",
          "text": "javanais",
          "type": "example"
        }
      ],
      "glosses": [
        "Used to break up certain vowel sequences, for euphonic reasons."
      ],
      "id": "en--n--fr-interfix-kTsMosRY",
      "tags": [
        "morpheme"
      ]
    }
  ],
  "word": "-n-"
}

{
  "head_templates": [
    {
      "args": {
        "1": "fr",
        "2": "interfix"
      },
      "expansion": "-n-",
      "name": "head"
    }
  ],
  "lang": "French",
  "lang_code": "fr",
  "pos": "interfix",
  "senses": [
    {
      "categories": [
        "French entries with incorrect language header",
        "French interfixes",
        "French lemmas",
        "French terms with usage examples"
      ],
      "examples": [
        {
          "english": "Javanese",
          "text": "javanais",
          "type": "example"
        }
      ],
      "glosses": [
        "Used to break up certain vowel sequences, for euphonic reasons."
      ],
      "tags": [
        "morpheme"
      ]
    }
  ],
  "word": "-n-"
}