"book prop" meaning in English

{
  "forms": [
    {
      "form": "book props",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "book prop (plural book props)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "bold_text_offsets": [
            [
              124,
              133
            ]
          ],
          "ref": "1862, Edward Bulwer Lytton Baron Lytton, A Strange Story, Volume 1, page 214:",
          "text": "The arm-chair by the fireplace; the knee-hole writing-table beside it; the sofa near the recess of a large bay-window, with book-prop and candlestick screwed to its back;",
          "type": "quote"
        }
      ],
      "glosses": [
        "A large, wooden support structure used to support an oversized book, usually found in a library."
      ],
      "id": "en-book_prop-en-noun-D-IK-ajT",
      "links": [
        [
          "large",
          "large"
        ],
        [
          "wooden",
          "wooden"
        ],
        [
          "support",
          "support"
        ],
        [
          "structure",
          "structure"
        ],
        [
          "oversized",
          "oversized"
        ],
        [
          "book",
          "book"
        ],
        [
          "library",
          "library"
        ]
      ]
    }
  ],
  "word": "book prop"
}

{
  "forms": [
    {
      "form": "book props",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "book prop (plural book props)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with quotations",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "examples": [
        {
          "bold_text_offsets": [
            [
              124,
              133
            ]
          ],
          "ref": "1862, Edward Bulwer Lytton Baron Lytton, A Strange Story, Volume 1, page 214:",
          "text": "The arm-chair by the fireplace; the knee-hole writing-table beside it; the sofa near the recess of a large bay-window, with book-prop and candlestick screwed to its back;",
          "type": "quote"
        }
      ],
      "glosses": [
        "A large, wooden support structure used to support an oversized book, usually found in a library."
      ],
      "links": [
        [
          "large",
          "large"
        ],
        [
          "wooden",
          "wooden"
        ],
        [
          "support",
          "support"
        ],
        [
          "structure",
          "structure"
        ],
        [
          "oversized",
          "oversized"
        ],
        [
          "book",
          "book"
        ],
        [
          "library",
          "library"
        ]
      ]
    }
  ],
  "word": "book prop"
}