"內接圓" meaning in Japanese

{
  "forms": [
    {
      "form": "內接圓",
      "ruby": [
        [
          "內",
          "ない"
        ],
        [
          "接",
          "せつ"
        ],
        [
          "圓",
          "えん"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "naisetsuen",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "naisetwen",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "ないせつゑん",
      "roman": "naisetwen",
      "tags": [
        "hiragana",
        "historical"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "ないせつえん",
        "hhira": "ないせつゑん"
      },
      "expansion": "內(ない)接(せつ)圓(えん) • (naisetsuen) ^(←ないせつゑん (naisetwen)?)",
      "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"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese kyūjitai spellings",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese links with redundant alt parameters",
          "parents": [
            "Links with redundant alt parameters",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese links with redundant wikilinks",
          "parents": [
            "Links with redundant wikilinks",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms with 3 kanji",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms with redundant sortkeys",
          "parents": [
            "Terms with redundant sortkeys",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 3 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "form_of": [
        {
          "word": "内接円"
        }
      ],
      "glosses": [
        "Kyūjitai form of 内接円"
      ],
      "id": "en-內接圓-ja-noun-ddMM21l0",
      "links": [
        [
          "Kyūjitai",
          "kyūjitai"
        ],
        [
          "内接円",
          "内接円#Japanese"
        ]
      ],
      "tags": [
        "form-of",
        "kyūjitai"
      ]
    }
  ],
  "word": "內接圓"
}

{
  "forms": [
    {
      "form": "內接圓",
      "ruby": [
        [
          "內",
          "ない"
        ],
        [
          "接",
          "せつ"
        ],
        [
          "圓",
          "えん"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "naisetsuen",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "naisetwen",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "ないせつゑん",
      "roman": "naisetwen",
      "tags": [
        "hiragana",
        "historical"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "ないせつえん",
        "hhira": "ないせつゑん"
      },
      "expansion": "內(ない)接(せつ)圓(えん) • (naisetsuen) ^(←ないせつゑん (naisetwen)?)",
      "name": "ja-noun"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Japanese entries with incorrect language header",
        "Japanese kyūjitai spellings",
        "Japanese lemmas",
        "Japanese links with redundant alt parameters",
        "Japanese links with redundant wikilinks",
        "Japanese nouns",
        "Japanese terms historically spelled with ゑ",
        "Japanese terms spelled with fifth grade kanji",
        "Japanese terms spelled with hyōgai kanji",
        "Japanese terms spelled with jinmeiyō kanji",
        "Japanese terms with 3 kanji",
        "Japanese terms with redundant sortkeys",
        "Pages with 3 entries",
        "Pages with entries"
      ],
      "form_of": [
        {
          "word": "内接円"
        }
      ],
      "glosses": [
        "Kyūjitai form of 内接円"
      ],
      "links": [
        [
          "Kyūjitai",
          "kyūjitai"
        ],
        [
          "内接円",
          "内接円#Japanese"
        ]
      ],
      "tags": [
        "form-of",
        "kyūjitai"
      ]
    }
  ],
  "word": "內接圓"
}

{
  "called_from": "parser/304",
  "msg": "HTML tag <span> not properly closed",
  "path": [
    "內接圓"
  ],
  "section": "Japanese",
  "subsection": "noun",
  "title": "內接圓",
  "trace": "started on line 2, detected on line 2"
}

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