"blue chamber" meaning in English

{
  "etymology_text": "From the tale of Bluebeard.",
  "forms": [
    {
      "form": "blue chambers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "blue chamber (plural blue chambers)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with language name categories using raw markup",
          "parents": [
            "Entries with language name categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with topic categories using raw markup",
          "parents": [
            "Entries with topic categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms with non-redundant non-automated sortkeys",
          "parents": [
            "Terms with non-redundant non-automated sortkeys",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Rooms",
          "orig": "en:Rooms",
          "parents": [
            "Buildings and structures",
            "Architecture",
            "Applied sciences",
            "Art",
            "Sciences",
            "Culture",
            "All topics",
            "Society",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1855, Catherine Grace F. Gore, The Heir of Selwood, G. Routledge & Co., page 262",
          "text": "[…] Matty would scarcely find fault with my visiting their blue chamber. […]",
          "type": "quotation"
        },
        {
          "ref": "1859 June 18, Charles Dickens, A Tale of Two Cities, Book the Second, Chapter VI, in All the Year Round, Volume I, Number 8, page 172",
          "text": "On Sundays, Miss Pross dined at the Doctor’s table, but on other days persisted in taking her meals, at unknown periods, either in the lower regions, or in her own room on the second floor—a blue chamber, to which no one but her Ladybird ever gained admittance."
        },
        {
          "ref": "1925, Sabine Baring-Gould, Cornish characters and strange events",
          "text": "My mother dared not break the lock, as my father had prohibited any one from entering this, his blue chamber; and what was worse, he had the key.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A forbidden room."
      ],
      "id": "en-blue_chamber-en-noun-QKbfGnlG",
      "raw_glosses": [
        "(idiomatic) A forbidden room."
      ],
      "tags": [
        "idiomatic"
      ]
    }
  ],
  "sounds": [
    {
      "audio": "en-au-blue chamber.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/5/5e/En-au-blue_chamber.ogg/En-au-blue_chamber.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/5/5e/En-au-blue_chamber.ogg",
      "tags": [
        "Australia"
      ],
      "text": "Audio (AU)"
    }
  ],
  "word": "blue chamber"
}

{
  "etymology_text": "From the tale of Bluebeard.",
  "forms": [
    {
      "form": "blue chambers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "blue chamber (plural blue chambers)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English entries with language name categories using raw markup",
        "English entries with topic categories using raw markup",
        "English eponyms",
        "English idioms",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with audio links",
        "English terms with non-redundant non-automated sortkeys",
        "English terms with quotations",
        "Quotation templates to be cleaned",
        "en:Rooms"
      ],
      "examples": [
        {
          "ref": "1855, Catherine Grace F. Gore, The Heir of Selwood, G. Routledge & Co., page 262",
          "text": "[…] Matty would scarcely find fault with my visiting their blue chamber. […]",
          "type": "quotation"
        },
        {
          "ref": "1859 June 18, Charles Dickens, A Tale of Two Cities, Book the Second, Chapter VI, in All the Year Round, Volume I, Number 8, page 172",
          "text": "On Sundays, Miss Pross dined at the Doctor’s table, but on other days persisted in taking her meals, at unknown periods, either in the lower regions, or in her own room on the second floor—a blue chamber, to which no one but her Ladybird ever gained admittance."
        },
        {
          "ref": "1925, Sabine Baring-Gould, Cornish characters and strange events",
          "text": "My mother dared not break the lock, as my father had prohibited any one from entering this, his blue chamber; and what was worse, he had the key.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A forbidden room."
      ],
      "raw_glosses": [
        "(idiomatic) A forbidden room."
      ],
      "tags": [
        "idiomatic"
      ]
    }
  ],
  "sounds": [
    {
      "audio": "en-au-blue chamber.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/5/5e/En-au-blue_chamber.ogg/En-au-blue_chamber.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/5/5e/En-au-blue_chamber.ogg",
      "tags": [
        "Australia"
      ],
      "text": "Audio (AU)"
    }
  ],
  "word": "blue chamber"
}