"glass silk" meaning in English

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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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      "glosses": [
        "Fine threads of glass, wound, when in fusion, on rapidly rotating heated cylinders."
      ],
      "id": "en-glass_silk-en-noun-Nmw5ennb",
      "tags": [
        "uncountable"
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      "translations": [
        {
          "code": "cmn",
          "lang": "Chinese Mandarin",
          "sense": "fine threads of glass",
          "word": "玻璃絲"
        },
        {
          "code": "cmn",
          "lang": "Chinese Mandarin",
          "roman": "bōlisī",
          "sense": "fine threads of glass",
          "word": "玻璃丝"
        },
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "fine threads of glass",
          "word": "lasisilkki"
        }
      ]
    }
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  "word": "glass silk"
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      "expansion": "glass silk (uncountable)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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        "Fine threads of glass, wound, when in fusion, on rapidly rotating heated cylinders."
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  "translations": [
    {
      "code": "cmn",
      "lang": "Chinese Mandarin",
      "sense": "fine threads of glass",
      "word": "玻璃絲"
    },
    {
      "code": "cmn",
      "lang": "Chinese Mandarin",
      "roman": "bōlisī",
      "sense": "fine threads of glass",
      "word": "玻璃丝"
    },
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "fine threads of glass",
      "word": "lasisilkki"
    }
  ],
  "word": "glass silk"
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