"Russia iron" meaning in English

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  "lang_code": "en",
  "pos": "noun",
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          "name": "Manufacturing",
          "orig": "en:Manufacturing",
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      "glosses": [
        "A sheet iron coated with a blue-black layer of oxide."
      ],
      "id": "en-Russia_iron-en-noun-hjJ-coQY",
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          "manufacturing",
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        [
          "sheet iron",
          "sheet iron"
        ],
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          "blue",
          "blue"
        ],
        [
          "black",
          "black"
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        [
          "oxide",
          "oxide"
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      "raw_glosses": [
        "(manufacturing, historical) A sheet iron coated with a blue-black layer of oxide."
      ],
      "related": [
        {
          "word": "sable iron"
        }
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      "synonyms": [
        {
          "word": "Russian iron"
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        "historical",
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      "topics": [
        "business",
        "manufacturing"
      ]
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  "word": "Russia iron"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "sable iron"
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      "glosses": [
        "A sheet iron coated with a blue-black layer of oxide."
      ],
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          "manufacturing",
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        [
          "sheet iron",
          "sheet iron"
        ],
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          "blue",
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          "black",
          "black"
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          "oxide",
          "oxide"
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        "(manufacturing, historical) A sheet iron coated with a blue-black layer of oxide."
      ],
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          "word": "Russian iron"
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  "word": "Russia iron"
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