"treacle paper" meaning in English

{
  "forms": [
    {
      "form": "treacle papers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "treacle paper (plural treacle papers)",
      "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": "English entries with topic categories using raw markup",
          "parents": [
            "Entries with topic categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms with non-redundant non-automated sortkeys",
          "parents": [
            "Terms with non-redundant non-automated sortkeys",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Paper",
          "orig": "en:Paper",
          "parents": [
            "Materials",
            "Manufacturing",
            "Human activity",
            "Human behaviour",
            "Human",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1912, Katherine Mansfield, The Woman at the Store",
          "text": "Flies buzzed in circles round the ceiling, and the treacle papers and bundles of dried clover were pinned to the window curtains.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Paper covered in treacle, meant to attract and catch flies."
      ],
      "id": "en-treacle_paper-en-noun-0dQB~7NK",
      "links": [
        [
          "treacle",
          "treacle"
        ]
      ]
    }
  ],
  "word": "treacle paper"
}

{
  "forms": [
    {
      "form": "treacle papers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "treacle paper (plural treacle papers)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English entries with topic categories using raw markup",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with non-redundant non-automated sortkeys",
        "English terms with quotations",
        "Quotation templates to be cleaned",
        "en:Paper"
      ],
      "examples": [
        {
          "ref": "1912, Katherine Mansfield, The Woman at the Store",
          "text": "Flies buzzed in circles round the ceiling, and the treacle papers and bundles of dried clover were pinned to the window curtains.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Paper covered in treacle, meant to attract and catch flies."
      ],
      "links": [
        [
          "treacle",
          "treacle"
        ]
      ]
    }
  ],
  "word": "treacle paper"
}