"延長戦" meaning in Japanese

{
  "etymology_templates": [
    {
      "args": {
        "1": "ja",
        "2": "延長",
        "3": "戦",
        "t1": "extension",
        "t2": "game",
        "tr1": "enchō",
        "tr2": "sen"
      },
      "expansion": "延長 (enchō, “extension”) + 戦 (sen, “game”)",
      "name": "compound"
    }
  ],
  "etymology_text": "From 延長 (enchō, “extension”) + 戦 (sen, “game”).",
  "forms": [
    {
      "form": "延長戦",
      "ruby": [
        [
          "延",
          "えん"
        ],
        [
          "長",
          "ちょう"
        ],
        [
          "戦",
          "せん"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "enchōsen",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "entyausen",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "えんちやうせん",
      "roman": "entyausen",
      "tags": [
        "hiragana",
        "historical"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "えんちょうせん",
        "hhira": "えんちやうせん"
      },
      "expansion": "延(えん)長(ちょう)戦(せん) • (enchōsen) ^(←えんちやうせん (entyausen)?)",
      "name": "ja-noun"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Japanese entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
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          "source": "w"
        },
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          "kind": "other",
          "name": "Japanese entries with topic categories using raw markup",
          "parents": [
            "Entries with topic categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese links with redundant alt parameters",
          "parents": [
            "Links with redundant alt parameters",
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          "source": "w"
        },
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          "kind": "other",
          "name": "Japanese links with redundant wikilinks",
          "parents": [
            "Links with redundant wikilinks",
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          "parents": [
            "Terms with redundant sortkeys",
            "Entry maintenance"
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          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with raw sortkeys",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "ja",
          "name": "Sports",
          "orig": "ja:Sports",
          "parents": [
            "Human activity",
            "Human behaviour",
            "Human",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "An extra game of soccer, baseball, martial arts, etc; an extra time; an extra innings."
      ],
      "id": "en-延長戦-ja-noun-PrdMnh~q",
      "links": [
        [
          "extra",
          "extra"
        ],
        [
          "game",
          "game"
        ],
        [
          "extra time",
          "extra time"
        ],
        [
          "extra innings",
          "extra innings"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "other": "えんちょーせん"
    },
    {
      "ipa": "[ẽ̞ɲ̟t͡ɕo̞ːsẽ̞ɴ]"
    }
  ],
  "word": "延長戦"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "ja",
        "2": "延長",
        "3": "戦",
        "t1": "extension",
        "t2": "game",
        "tr1": "enchō",
        "tr2": "sen"
      },
      "expansion": "延長 (enchō, “extension”) + 戦 (sen, “game”)",
      "name": "compound"
    }
  ],
  "etymology_text": "From 延長 (enchō, “extension”) + 戦 (sen, “game”).",
  "forms": [
    {
      "form": "延長戦",
      "ruby": [
        [
          "延",
          "えん"
        ],
        [
          "長",
          "ちょう"
        ],
        [
          "戦",
          "せん"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "enchōsen",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "entyausen",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "えんちやうせん",
      "roman": "entyausen",
      "tags": [
        "hiragana",
        "historical"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "えんちょうせん",
        "hhira": "えんちやうせん"
      },
      "expansion": "延(えん)長(ちょう)戦(せん) • (enchōsen) ^(←えんちやうせん (entyausen)?)",
      "name": "ja-noun"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "noun",
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        "Japanese entries with incorrect language header",
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        "Japanese nouns",
        "Japanese terms spelled with fourth grade kanji",
        "Japanese terms spelled with second grade kanji",
        "Japanese terms spelled with sixth grade kanji",
        "Japanese terms with IPA pronunciation",
        "Japanese terms with non-redundant non-automated sortkeys",
        "Japanese terms with redundant sortkeys",
        "Japanese terms written with three Han script characters",
        "Pages with raw sortkeys",
        "ja:Sports"
      ],
      "glosses": [
        "An extra game of soccer, baseball, martial arts, etc; an extra time; an extra innings."
      ],
      "links": [
        [
          "extra",
          "extra"
        ],
        [
          "game",
          "game"
        ],
        [
          "extra time",
          "extra time"
        ],
        [
          "extra innings",
          "extra innings"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "other": "えんちょーせん"
    },
    {
      "ipa": "[ẽ̞ɲ̟t͡ɕo̞ːsẽ̞ɴ]"
    }
  ],
  "word": "延長戦"
}