"二重窓" meaning in Japanese

{
  "etymology_templates": [
    {
      "args": {
        "1": "二重",
        "2": "にじゅう",
        "3": "窓",
        "4": "まど",
        "t1": "",
        "t2": ""
      },
      "expansion": "二重(にじゅう) (nijū) + 窓(まど) (mado)",
      "name": "ja-compound"
    }
  ],
  "etymology_text": "From 二重(にじゅう) (nijū) + 窓(まど) (mado).",
  "forms": [
    {
      "form": "二重窓",
      "ruby": [
        [
          "二",
          "に"
        ],
        [
          "重",
          "じゅう"
        ],
        [
          "窓",
          "まど"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "nijūmado",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "にじゅうまど"
      },
      "expansion": "二(に)重(じゅう)窓(まど) • (nijūmado)",
      "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 links with redundant wikilinks",
          "parents": [
            "Links with redundant wikilinks",
            "Entry maintenance"
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          "source": "w"
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            "Terms with non-redundant manual transliterations",
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          "source": "w"
        },
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          "kind": "other",
          "name": "Japanese terms with redundant sortkeys",
          "parents": [
            "Terms with redundant sortkeys",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "ja",
          "name": "Architecture",
          "orig": "ja:Architecture",
          "parents": [
            "Applied sciences",
            "Art",
            "Sciences",
            "Culture",
            "All topics",
            "Society",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "double-pane window, found especially in Hokkaido and Tōhoku as cold-proofing"
      ],
      "id": "en-二重窓-ja-noun-pks2eZs7",
      "links": [
        [
          "double",
          "double"
        ],
        [
          "pane",
          "pane"
        ],
        [
          "window",
          "window"
        ]
      ],
      "related": [
        {
          "roman": "uchimado",
          "ruby": [
            [
              "内窓",
              "うちまど"
            ]
          ],
          "word": "内窓"
        }
      ],
      "wikipedia": [
        "ja:二重窓"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ɲ̟iʑɨᵝːma̠do̞]"
    }
  ],
  "word": "二重窓"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "二重",
        "2": "にじゅう",
        "3": "窓",
        "4": "まど",
        "t1": "",
        "t2": ""
      },
      "expansion": "二重(にじゅう) (nijū) + 窓(まど) (mado)",
      "name": "ja-compound"
    }
  ],
  "etymology_text": "From 二重(にじゅう) (nijū) + 窓(まど) (mado).",
  "forms": [
    {
      "form": "二重窓",
      "ruby": [
        [
          "二",
          "に"
        ],
        [
          "重",
          "じゅう"
        ],
        [
          "窓",
          "まど"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "nijūmado",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "にじゅうまど"
      },
      "expansion": "二(に)重(じゅう)窓(まど) • (nijūmado)",
      "name": "ja-noun"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "noun",
  "related": [
    {
      "roman": "uchimado",
      "ruby": [
        [
          "内窓",
          "うちまど"
        ]
      ],
      "word": "内窓"
    }
  ],
  "senses": [
    {
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        "Japanese compound terms",
        "Japanese entries with incorrect language header",
        "Japanese lemmas",
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        "Japanese terms spelled with sixth grade kanji",
        "Japanese terms spelled with third grade kanji",
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        "Japanese terms with redundant sortkeys",
        "Japanese terms written with three Han script characters",
        "ja:Architecture"
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      "glosses": [
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          "double"
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        [
          "pane",
          "pane"
        ],
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          "window",
          "window"
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      ],
      "wikipedia": [
        "ja:二重窓"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ɲ̟iʑɨᵝːma̠do̞]"
    }
  ],
  "word": "二重窓"
}

{
  "called_from": "parser/1336",
  "msg": "no corresponding start tag found for </span>",
  "path": [
    "二重窓"
  ],
  "section": "Japanese",
  "subsection": "noun",
  "title": "二重窓",
  "trace": ""
}