"motley iron" meaning in English

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  "lang_code": "en",
  "pos": "noun",
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      "glosses": [
        "A medium-quality cast iron, consisting of a mixture of white iron and grey iron."
      ],
      "id": "en-motley_iron-en-noun-ZQwz0JUd",
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        [
          "cast iron",
          "cast iron"
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          "white iron",
          "white iron"
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          "grey iron",
          "grey iron"
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      "raw_glosses": [
        "(obsolete) A medium-quality cast iron, consisting of a mixture of white iron and grey iron."
      ],
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  "word": "motley iron"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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      "glosses": [
        "A medium-quality cast iron, consisting of a mixture of white iron and grey iron."
      ],
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        [
          "cast iron",
          "cast iron"
        ],
        [
          "white iron",
          "white iron"
        ],
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          "grey iron",
          "grey iron"
        ]
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        "(obsolete) A medium-quality cast iron, consisting of a mixture of white iron and grey iron."
      ],
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  "word": "motley iron"
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