"biennî" meaning in Italien

{
  "categories": [
    {
      "kind": "other",
      "name": "Formes de noms communs en italien",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Italien",
      "orig": "italien",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Î en italien",
      "orig": "î en italien",
      "parents": [],
      "source": "w"
    }
  ],
  "forms": [
    {
      "form": "biennio",
      "ipas": [
        "\\bi.ˈɛn.njo\\"
      ],
      "tags": [
        "singular"
      ]
    }
  ],
  "lang": "Italien",
  "lang_code": "it",
  "pos": "noun",
  "pos_title": "Forme de nom commun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Wiktionnaire:Exemples manquants en italien",
          "parents": [],
          "source": "w"
        }
      ],
      "form_of": [
        {
          "word": "biennio"
        }
      ],
      "glosses": [
        "Pluriel de biennio."
      ],
      "id": "fr-biennî-it-noun-mMt9E9mp"
    }
  ],
  "sounds": [
    {
      "ipa": "\\bi.ˈɛn.ni\\"
    }
  ],
  "tags": [
    "form-of",
    "masculine",
    "plural"
  ],
  "word": "biennî"
}

{
  "categories": [
    "Formes de noms communs en italien",
    "italien",
    "î en italien"
  ],
  "forms": [
    {
      "form": "biennio",
      "ipas": [
        "\\bi.ˈɛn.njo\\"
      ],
      "tags": [
        "singular"
      ]
    }
  ],
  "lang": "Italien",
  "lang_code": "it",
  "pos": "noun",
  "pos_title": "Forme de nom commun",
  "senses": [
    {
      "categories": [
        "Wiktionnaire:Exemples manquants en italien"
      ],
      "form_of": [
        {
          "word": "biennio"
        }
      ],
      "glosses": [
        "Pluriel de biennio."
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\bi.ˈɛn.ni\\"
    }
  ],
  "tags": [
    "form-of",
    "masculine",
    "plural"
  ],
  "word": "biennî"
}