"sessennio" meaning in Italian

{
  "etymology_templates": [
    {
      "args": {
        "1": "it",
        "2": "la",
        "3": "sexennium"
      },
      "expansion": "Borrowed from Latin sexennium",
      "name": "bor+"
    }
  ],
  "etymology_text": "Borrowed from Latin sexennium.",
  "forms": [
    {
      "form": "sessenni",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "m"
      },
      "expansion": "sessennio m (plural sessenni)",
      "name": "it-noun"
    }
  ],
  "lang": "Italian",
  "lang_code": "it",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Italian 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"
        },
        {
          "kind": "topical",
          "langcode": "it",
          "name": "Time",
          "orig": "it:Time",
          "parents": [
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "a period of six years"
      ],
      "id": "en-sessennio-it-noun-vAOOp9DT",
      "tags": [
        "masculine"
      ]
    }
  ],
  "word": "sessennio"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "it",
        "2": "la",
        "3": "sexennium"
      },
      "expansion": "Borrowed from Latin sexennium",
      "name": "bor+"
    }
  ],
  "etymology_text": "Borrowed from Latin sexennium.",
  "forms": [
    {
      "form": "sessenni",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "m"
      },
      "expansion": "sessennio m (plural sessenni)",
      "name": "it-noun"
    }
  ],
  "lang": "Italian",
  "lang_code": "it",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Italian countable nouns",
        "Italian entries with incorrect language header",
        "Italian lemmas",
        "Italian masculine nouns",
        "Italian nouns",
        "Italian terms borrowed from Latin",
        "Italian terms derived from Latin",
        "Pages with 1 entry",
        "Pages with entries",
        "it:Time"
      ],
      "glosses": [
        "a period of six years"
      ],
      "tags": [
        "masculine"
      ]
    }
  ],
  "word": "sessennio"
}