"dressing-room" meaning in English

{
  "forms": [
    {
      "form": "dressing-rooms",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "dressing-room (plural dressing-rooms)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "dressing room"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 2 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
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      "examples": [
        {
          "ref": "1842, [Katherine] Thomson, chapter I, in Widows and Widowers. A Romance of Real Life., volume II, London: Richard Bentley, […], →OCLC, page 13:",
          "text": "Whilst Adeline still sat, even until the grey light stole through the blinds of her dressing-room, a knock was heard at the door.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Alternative form of dressing room."
      ],
      "id": "en-dressing-room-en-noun-pL79Fxej",
      "links": [
        [
          "dressing room",
          "dressing room#English"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative"
      ]
    }
  ],
  "word": "dressing-room"
}

{
  "forms": [
    {
      "form": "dressing-rooms",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "dressing-room (plural dressing-rooms)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "dressing room"
        }
      ],
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with quotations",
        "Pages with 2 entries",
        "Pages with entries"
      ],
      "examples": [
        {
          "ref": "1842, [Katherine] Thomson, chapter I, in Widows and Widowers. A Romance of Real Life., volume II, London: Richard Bentley, […], →OCLC, page 13:",
          "text": "Whilst Adeline still sat, even until the grey light stole through the blinds of her dressing-room, a knock was heard at the door.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Alternative form of dressing room."
      ],
      "links": [
        [
          "dressing room",
          "dressing room#English"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative"
      ]
    }
  ],
  "word": "dressing-room"
}