"cold working" meaning in English

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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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          "name": "Metallurgy",
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      "glosses": [
        "The process of strengthening a metal through plastic deformation."
      ],
      "id": "en-cold_working-en-noun-jIgloke8",
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          "metallurgy",
          "metallurgy"
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        [
          "strengthen",
          "strengthen"
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          "metal",
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        [
          "plastic deformation",
          "plastic deformation"
        ]
      ],
      "raw_glosses": [
        "(metallurgy) The process of strengthening a metal through plastic deformation."
      ],
      "related": [
        {
          "word": "cold work"
        }
      ],
      "synonyms": [
        {
          "word": "work hardening"
        }
      ],
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        "uncountable"
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      "topics": [
        "engineering",
        "metallurgy",
        "natural-sciences",
        "physical-sciences"
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  "word": "cold working"
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  "lang_code": "en",
  "pos": "noun",
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    {
      "word": "cold work"
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        "The process of strengthening a metal through plastic deformation."
      ],
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          "strengthen",
          "strengthen"
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          "plastic deformation"
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        "(metallurgy) The process of strengthening a metal through plastic deformation."
      ],
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  "synonyms": [
    {
      "word": "work hardening"
    }
  ],
  "word": "cold working"
}