"Fyrri heimsstyrjöldin" meaning in Islandais

{
  "categories": [
    {
      "kind": "other",
      "name": "Genres manquants en islandais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Noms communs en islandais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Islandais",
      "orig": "islandais",
      "parents": [],
      "source": "w"
    }
  ],
  "lang": "Islandais",
  "lang_code": "is",
  "pos": "noun",
  "pos_title": "Nom commun",
  "raw_tags": [
    "genre à préciser : {{m}}, {{f}}, {{mf}}, {{n}} ?"
  ],
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Lexique en islandais de l’histoire",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Première Guerre mondiale."
      ],
      "id": "fr-Fyrri_heimsstyrjöldin-is-noun-u5RmNsrl",
      "topics": [
        "history"
      ]
    }
  ],
  "word": "Fyrri heimsstyrjöldin"
}

{
  "categories": [
    "Genres manquants en islandais",
    "Noms communs en islandais",
    "islandais"
  ],
  "lang": "Islandais",
  "lang_code": "is",
  "pos": "noun",
  "pos_title": "Nom commun",
  "raw_tags": [
    "genre à préciser : {{m}}, {{f}}, {{mf}}, {{n}} ?"
  ],
  "senses": [
    {
      "categories": [
        "Lexique en islandais de l’histoire"
      ],
      "glosses": [
        "Première Guerre mondiale."
      ],
      "topics": [
        "history"
      ]
    }
  ],
  "word": "Fyrri heimsstyrjöldin"
}