"Bristol board" meaning in English

{
  "etymology_text": "The original Bristol board was made in Bristol, England and was a pasted board made of paper containing rags.",
  "forms": [
    {
      "form": "Bristol boards",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~"
      },
      "expansion": "Bristol board (countable and uncountable, plural Bristol 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"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Art",
          "orig": "en:Art",
          "parents": [
            "Culture",
            "Society",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A heavyweight paper used for technical drawing, illustration, and other two-dimensional art forms."
      ],
      "id": "en-Bristol_board-en-noun-eWicKpN-",
      "links": [
        [
          "heavyweight",
          "heavyweight"
        ],
        [
          "paper",
          "paper"
        ],
        [
          "technical",
          "technical"
        ],
        [
          "drawing",
          "drawing"
        ],
        [
          "illustration",
          "illustration"
        ]
      ],
      "synonyms": [
        {
          "word": "Bristol paper"
        }
      ],
      "tags": [
        "countable",
        "uncountable"
      ],
      "wikipedia": [
        "Bristol board"
      ]
    }
  ],
  "word": "Bristol board"
}

{
  "etymology_text": "The original Bristol board was made in Bristol, England and was a pasted board made of paper containing rags.",
  "forms": [
    {
      "form": "Bristol boards",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~"
      },
      "expansion": "Bristol board (countable and uncountable, plural Bristol 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 uncountable nouns",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Art"
      ],
      "glosses": [
        "A heavyweight paper used for technical drawing, illustration, and other two-dimensional art forms."
      ],
      "links": [
        [
          "heavyweight",
          "heavyweight"
        ],
        [
          "paper",
          "paper"
        ],
        [
          "technical",
          "technical"
        ],
        [
          "drawing",
          "drawing"
        ],
        [
          "illustration",
          "illustration"
        ]
      ],
      "synonyms": [
        {
          "word": "Bristol paper"
        }
      ],
      "tags": [
        "countable",
        "uncountable"
      ],
      "wikipedia": [
        "Bristol board"
      ]
    }
  ],
  "word": "Bristol board"
}