"定期" meaning in Japanese

{
  "forms": [
    {
      "form": "定期",
      "ruby": [
        [
          "定",
          "てい"
        ],
        [
          "期",
          "き"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "teiki",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "ていき"
      },
      "expansion": "定(てい)期(き) • (teiki)",
      "name": "ja-noun"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "noun",
  "senses": [
    {
      "glosses": [
        "fixed period"
      ],
      "id": "en-定期-ja-noun-F23wHXju",
      "links": [
        [
          "fixed",
          "fixed"
        ]
      ]
    },
    {
      "alt_of": [
        {
          "word": "定期乗車券"
        }
      ],
      "categories": [
        {
          "_dis": "1 99",
          "kind": "other",
          "name": "Japanese entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "3 97",
          "kind": "other",
          "name": "Japanese links with redundant wikilinks",
          "parents": [
            "Links with redundant wikilinks",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "3 97",
          "kind": "other",
          "name": "Japanese terms with redundant sortkeys",
          "parents": [
            "Terms with redundant sortkeys",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "Short for 定期乗車券."
      ],
      "id": "en-定期-ja-noun-DvvomiM6",
      "links": [
        [
          "定期乗車券",
          "定期乗車券#Japanese"
        ]
      ],
      "tags": [
        "abbreviation",
        "alt-of"
      ]
    }
  ],
  "word": "定期"
}

{
  "categories": [
    "Japanese entries with incorrect language header",
    "Japanese lemmas",
    "Japanese links with redundant wikilinks",
    "Japanese nouns",
    "Japanese terms spelled with third grade kanji",
    "Japanese terms with redundant sortkeys",
    "Japanese terms written with two Han script characters"
  ],
  "forms": [
    {
      "form": "定期",
      "ruby": [
        [
          "定",
          "てい"
        ],
        [
          "期",
          "き"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "teiki",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "ていき"
      },
      "expansion": "定(てい)期(き) • (teiki)",
      "name": "ja-noun"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "noun",
  "senses": [
    {
      "glosses": [
        "fixed period"
      ],
      "links": [
        [
          "fixed",
          "fixed"
        ]
      ]
    },
    {
      "alt_of": [
        {
          "word": "定期乗車券"
        }
      ],
      "categories": [
        "Japanese short forms"
      ],
      "glosses": [
        "Short for 定期乗車券."
      ],
      "links": [
        [
          "定期乗車券",
          "定期乗車券#Japanese"
        ]
      ],
      "tags": [
        "abbreviation",
        "alt-of"
      ]
    }
  ],
  "word": "定期"
}

{
  "called_from": "parser/1336",
  "msg": "no corresponding start tag found for </span>",
  "path": [
    "定期"
  ],
  "section": "Japanese",
  "subsection": "noun",
  "title": "定期",
  "trace": ""
}