"시각신경" meaning in Coréen

{
  "categories": [
    {
      "kind": "other",
      "name": "Noms communs en coréen",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Coréen",
      "orig": "coréen",
      "parents": [],
      "source": "w"
    }
  ],
  "lang": "Coréen",
  "lang_code": "ko",
  "pos": "noun",
  "pos_title": "Nom commun",
  "raw_tags": [
    "sigaksin'gyeong"
  ],
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Lexique en coréen de l’anatomie",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Wiktionnaire:Exemples manquants en coréen",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Nerf optique."
      ],
      "id": "fr-시각신경-ko-noun-MCbfLSoO",
      "topics": [
        "anatomy"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\ɕʰiɡa̠kɕ͈inɡjʌ̹ŋ\\"
    }
  ],
  "word": "시각신경"
}

{
  "categories": [
    "Noms communs en coréen",
    "coréen"
  ],
  "lang": "Coréen",
  "lang_code": "ko",
  "pos": "noun",
  "pos_title": "Nom commun",
  "raw_tags": [
    "sigaksin'gyeong"
  ],
  "senses": [
    {
      "categories": [
        "Lexique en coréen de l’anatomie",
        "Wiktionnaire:Exemples manquants en coréen"
      ],
      "glosses": [
        "Nerf optique."
      ],
      "topics": [
        "anatomy"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\ɕʰiɡa̠kɕ͈inɡjʌ̹ŋ\\"
    }
  ],
  "word": "시각신경"
}