"off year" meaning in English

{
  "forms": [
    {
      "form": "off years",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "off year (plural off years)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "langcode": "en",
          "name": "US politics",
          "orig": "en:US politics",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "An odd-numbered year in which a general election is held but no presidential election or midterm election takes place."
      ],
      "id": "en-off_year-en-noun-e9Ti5jHS",
      "links": [
        [
          "general election",
          "general election"
        ],
        [
          "presidential",
          "presidential"
        ],
        [
          "midterm",
          "midterm"
        ]
      ],
      "raw_glosses": [
        "(US politics, often attributive) An odd-numbered year in which a general election is held but no presidential election or midterm election takes place."
      ],
      "tags": [
        "US",
        "attributive",
        "often"
      ],
      "topics": [
        "government",
        "politics"
      ]
    }
  ],
  "word": "off year"
}

{
  "forms": [
    {
      "form": "off years",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "off year (plural off years)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "Pages with 1 entry",
        "Pages with entries",
        "en:US politics"
      ],
      "glosses": [
        "An odd-numbered year in which a general election is held but no presidential election or midterm election takes place."
      ],
      "links": [
        [
          "general election",
          "general election"
        ],
        [
          "presidential",
          "presidential"
        ],
        [
          "midterm",
          "midterm"
        ]
      ],
      "raw_glosses": [
        "(US politics, often attributive) An odd-numbered year in which a general election is held but no presidential election or midterm election takes place."
      ],
      "tags": [
        "US",
        "attributive",
        "often"
      ],
      "topics": [
        "government",
        "politics"
      ]
    }
  ],
  "word": "off year"
}