"phosphorus steel" meaning in English

{
  "forms": [
    {
      "form": "phosphorus steels",
      "tags": [
        "plural"
      ]
    }
  ],
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      "expansion": "phosphorus steel (countable and uncountable, plural phosphorus steels)",
      "name": "en-noun"
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  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
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          "kind": "other",
          "name": "English entries with incorrect language header",
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      ],
      "glosses": [
        "A steel containing more phosphorus than carbon."
      ],
      "id": "en-phosphorus_steel-en-noun-05X8uX6A",
      "links": [
        [
          "phosphorus",
          "phosphorus"
        ],
        [
          "carbon",
          "carbon"
        ]
      ],
      "tags": [
        "countable",
        "uncountable"
      ]
    }
  ],
  "word": "phosphorus steel"
}

{
  "forms": [
    {
      "form": "phosphorus steels",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~"
      },
      "expansion": "phosphorus steel (countable and uncountable, plural phosphorus steels)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
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        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
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        "Pages with 1 entry",
        "Pages with entries"
      ],
      "glosses": [
        "A steel containing more phosphorus than carbon."
      ],
      "links": [
        [
          "phosphorus",
          "phosphorus"
        ],
        [
          "carbon",
          "carbon"
        ]
      ],
      "tags": [
        "countable",
        "uncountable"
      ]
    }
  ],
  "word": "phosphorus steel"
}