"JR" meaning in 日本語

{
  "categories": [
    {
      "kind": "other",
      "name": "日本語",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "日本語 アルファベット記述",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "日本語 固有名詞",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "日本語_アルファベット記述",
      "parents": [],
      "source": "w"
    }
  ],
  "forms": [
    {
      "form": "ジェイアール"
    }
  ],
  "lang": "日本語",
  "lang_code": "ja",
  "pos": "name",
  "pos_title": "固有名詞",
  "related": [
    {
      "word": "省線"
    },
    {
      "word": "国鉄"
    },
    {
      "word": "JNR"
    }
  ],
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "日本語 略語",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "日本語 鉄道",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Japan Railwaysの略。日本国有鉄道が分割民営化されて成立した六社の企業の総称。"
      ],
      "id": "ja-JR-ja-name-DEfmJD3R",
      "tags": [
        "abbreviation"
      ],
      "topics": [
        "rail transport"
      ]
    }
  ],
  "word": "JR"
}

{
  "categories": [
    "日本語",
    "日本語 アルファベット記述",
    "日本語 固有名詞",
    "日本語_アルファベット記述"
  ],
  "forms": [
    {
      "form": "ジェイアール"
    }
  ],
  "lang": "日本語",
  "lang_code": "ja",
  "pos": "name",
  "pos_title": "固有名詞",
  "related": [
    {
      "word": "省線"
    },
    {
      "word": "国鉄"
    },
    {
      "word": "JNR"
    }
  ],
  "senses": [
    {
      "categories": [
        "日本語 略語",
        "日本語 鉄道"
      ],
      "glosses": [
        "Japan Railwaysの略。日本国有鉄道が分割民営化されて成立した六社の企業の総称。"
      ],
      "tags": [
        "abbreviation"
      ],
      "topics": [
        "rail transport"
      ]
    }
  ],
  "word": "JR"
}