"専攻" meaning in Japonais

{
  "categories": [
    {
      "kind": "other",
      "name": "Lexique en japonais de l’éducation",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Noms communs en japonais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Japonais",
      "orig": "japonais",
      "parents": [],
      "source": "w"
    }
  ],
  "derived": [
    {
      "word": "専攻する"
    }
  ],
  "lang": "Japonais",
  "lang_code": "ja",
  "pos": "noun",
  "pos_title": "Nom commun",
  "senses": [
    {
      "glosses": [
        "Spécialité, domaine particulier."
      ],
      "id": "fr-専攻-ja-noun-Fr8CAuiQ"
    }
  ],
  "sounds": [
    {
      "ipa": "\\seŋ̩.koː\\"
    }
  ],
  "word": "専攻"
}

{
  "categories": [
    "Lexique en japonais de l’éducation",
    "Noms communs en japonais",
    "japonais"
  ],
  "derived": [
    {
      "word": "専攻する"
    }
  ],
  "lang": "Japonais",
  "lang_code": "ja",
  "pos": "noun",
  "pos_title": "Nom commun",
  "senses": [
    {
      "glosses": [
        "Spécialité, domaine particulier."
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\seŋ̩.koː\\"
    }
  ],
  "word": "専攻"
}