"gathering board" meaning in English

{
  "forms": [
    {
      "form": "gathering boards",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "gathering board (plural gathering boards)",
      "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": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1874, “United States Patent Office”, in Official Gazette of the United States Patent Office:",
          "text": "To the rear of the machine is attached a gathering board on a horizontal line with a pivot in the roller about midway between the axis and top",
          "type": "quote"
        }
      ],
      "glosses": [
        "A table or board on which signatures are gathered or assembled, to form a book."
      ],
      "id": "en-gathering_board-en-noun-4UKSSrBF",
      "links": [
        [
          "signature",
          "signature"
        ],
        [
          "book",
          "book"
        ]
      ],
      "raw_glosses": [
        "(bookbinding) A table or board on which signatures are gathered or assembled, to form a book."
      ],
      "topics": [
        "arts",
        "bookbinding",
        "crafts",
        "hobbies",
        "lifestyle"
      ]
    }
  ],
  "word": "gathering board"
}

{
  "forms": [
    {
      "form": "gathering boards",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "gathering board (plural gathering boards)",
      "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": [
        {
          "ref": "1874, “United States Patent Office”, in Official Gazette of the United States Patent Office:",
          "text": "To the rear of the machine is attached a gathering board on a horizontal line with a pivot in the roller about midway between the axis and top",
          "type": "quote"
        }
      ],
      "glosses": [
        "A table or board on which signatures are gathered or assembled, to form a book."
      ],
      "links": [
        [
          "signature",
          "signature"
        ],
        [
          "book",
          "book"
        ]
      ],
      "raw_glosses": [
        "(bookbinding) A table or board on which signatures are gathered or assembled, to form a book."
      ],
      "topics": [
        "arts",
        "bookbinding",
        "crafts",
        "hobbies",
        "lifestyle"
      ]
    }
  ],
  "word": "gathering board"
}