"dust cap" meaning in English

{
  "forms": [
    {
      "form": "dust caps",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "dust cap (plural dust caps)",
      "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": "Headwear",
          "orig": "en:Headwear",
          "parents": [
            "Clothing",
            "Human",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1899, Kate Chopin, The Awakening:",
          "text": "Ellen brought him one of her dust-caps, and went into contortions of mirth, which she found it impossible to control, when she saw him put it on before the mirror as grotesquely as he could.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Something worn to protect one from dust; a cover placed over something to keep off dust."
      ],
      "id": "en-dust_cap-en-noun-qOy8FfFh",
      "links": [
        [
          "dust",
          "dust"
        ]
      ]
    }
  ],
  "word": "dust cap"
}

{
  "forms": [
    {
      "form": "dust caps",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "dust cap (plural dust caps)",
      "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",
        "Quotation templates to be cleaned",
        "en:Headwear"
      ],
      "examples": [
        {
          "ref": "1899, Kate Chopin, The Awakening:",
          "text": "Ellen brought him one of her dust-caps, and went into contortions of mirth, which she found it impossible to control, when she saw him put it on before the mirror as grotesquely as he could.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Something worn to protect one from dust; a cover placed over something to keep off dust."
      ],
      "links": [
        [
          "dust",
          "dust"
        ]
      ]
    }
  ],
  "word": "dust cap"
}