"smoke proof" meaning in English

{
  "forms": [
    {
      "form": "smoke proofs",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "smoke proof (plural smoke proofs)",
      "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": "topical",
          "langcode": "en",
          "name": "Typography",
          "orig": "en:Typography",
          "parents": [
            "Printing",
            "Writing",
            "Industries",
            "Human behaviour",
            "Language",
            "Business",
            "Human",
            "Communication",
            "Economics",
            "Society",
            "All topics",
            "Social sciences",
            "Fundamental",
            "Sciences"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "2009, James Mosley, edited by Michael F Suarez and Michael L Turner, The Cambridge History of the Book in Britain, vol. V, Cambridge, published 2014, page 171",
          "text": "Progress was observed from time to time by holding the end of the punch in the sooty flame of a candle or lamp and by pressing it on slightly damp paper to make a smoke proof.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A temporary print made from a thin coating of carbon deposited on the punch surface by a candle flame, used in evaluating the progress of the design of the punch."
      ],
      "id": "en-smoke_proof-en-noun-7vWzHX-p",
      "links": [
        [
          "typography",
          "typography"
        ],
        [
          "temporary",
          "temporary"
        ],
        [
          "print",
          "print"
        ],
        [
          "coating",
          "coating"
        ],
        [
          "carbon",
          "carbon"
        ],
        [
          "punch",
          "punch"
        ],
        [
          "surface",
          "surface"
        ],
        [
          "candle",
          "candle"
        ],
        [
          "flame",
          "flame"
        ]
      ],
      "raw_glosses": [
        "(typography, now chiefly historical) A temporary print made from a thin coating of carbon deposited on the punch surface by a candle flame, used in evaluating the progress of the design of the punch."
      ],
      "tags": [
        "historical"
      ],
      "topics": [
        "media",
        "publishing",
        "typography"
      ]
    }
  ],
  "sounds": [
    {
      "rhymes": "-uːf"
    }
  ],
  "word": "smoke proof"
}

{
  "forms": [
    {
      "form": "smoke proofs",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "smoke proof (plural smoke proofs)",
      "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 historical senses",
        "English terms with quotations",
        "Rhymes:English/uːf",
        "Rhymes:English/uːf/2 syllables",
        "en:Typography"
      ],
      "examples": [
        {
          "ref": "2009, James Mosley, edited by Michael F Suarez and Michael L Turner, The Cambridge History of the Book in Britain, vol. V, Cambridge, published 2014, page 171",
          "text": "Progress was observed from time to time by holding the end of the punch in the sooty flame of a candle or lamp and by pressing it on slightly damp paper to make a smoke proof.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A temporary print made from a thin coating of carbon deposited on the punch surface by a candle flame, used in evaluating the progress of the design of the punch."
      ],
      "links": [
        [
          "typography",
          "typography"
        ],
        [
          "temporary",
          "temporary"
        ],
        [
          "print",
          "print"
        ],
        [
          "coating",
          "coating"
        ],
        [
          "carbon",
          "carbon"
        ],
        [
          "punch",
          "punch"
        ],
        [
          "surface",
          "surface"
        ],
        [
          "candle",
          "candle"
        ],
        [
          "flame",
          "flame"
        ]
      ],
      "raw_glosses": [
        "(typography, now chiefly historical) A temporary print made from a thin coating of carbon deposited on the punch surface by a candle flame, used in evaluating the progress of the design of the punch."
      ],
      "tags": [
        "historical"
      ],
      "topics": [
        "media",
        "publishing",
        "typography"
      ]
    }
  ],
  "sounds": [
    {
      "rhymes": "-uːf"
    }
  ],
  "word": "smoke proof"
}