"teräs" meaning in Finnois

{
  "categories": [
    {
      "kind": "other",
      "name": "Alliages en finnois",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Lemmes en finnois",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Noms communs en finnois",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Finnois",
      "orig": "finnois",
      "parents": [],
      "source": "w"
    }
  ],
  "lang": "Finnois",
  "lang_code": "fi",
  "pos": "noun",
  "pos_title": "Nom commun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Lexique en finnois de la métallurgie",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Acier."
      ],
      "id": "fr-teräs-fi-noun-9ypDw9FJ",
      "topics": [
        "metallurgy"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\ˈteræs\\"
    }
  ],
  "word": "teräs"
}

{
  "categories": [
    "Alliages en finnois",
    "Lemmes en finnois",
    "Noms communs en finnois",
    "finnois"
  ],
  "lang": "Finnois",
  "lang_code": "fi",
  "pos": "noun",
  "pos_title": "Nom commun",
  "senses": [
    {
      "categories": [
        "Lexique en finnois de la métallurgie"
      ],
      "glosses": [
        "Acier."
      ],
      "topics": [
        "metallurgy"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\ˈteræs\\"
    }
  ],
  "word": "teräs"
}