"지옥철" meaning in Korean

{
  "etymology_templates": [
    {
      "args": {
        "1": "地獄鐵"
      },
      "expansion": "Sino-Korean word from 地獄鐵",
      "name": "ko-etym-sino"
    },
    {
      "args": {
        "1": "ko",
        "2": "지옥(地獄)",
        "3": "지하철(地下鐵)",
        "t1": "hell",
        "t2": "subway"
      },
      "expansion": "Blend of 지옥(地獄) (jiok, “hell”) + 지하철(地下鐵) (jihacheol, “subway”)",
      "name": "blend"
    }
  ],
  "etymology_text": "Sino-Korean word from 地獄鐵. Blend of 지옥(地獄) (jiok, “hell”) + 지하철(地下鐵) (jihacheol, “subway”).",
  "forms": [
    {
      "form": "jiokcheol",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "地獄鐵",
      "tags": [
        "hanja"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "hanja": "地獄鐵"
      },
      "expansion": "지옥철 • (jiokcheol) (hanja 地獄鐵)",
      "name": "ko-noun"
    }
  ],
  "lang": "Korean",
  "lang_code": "ko",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Korean blends",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Korean entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Korean terms with redundant script codes",
          "parents": [
            "Terms with redundant script codes",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Korean terms with redundant transliterations",
          "parents": [
            "Terms with redundant transliterations",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Sino-Korean words",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "ko",
          "name": "Rail transportation",
          "orig": "ko:Rail transportation",
          "parents": [
            "Transport",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "a very crowded subway line or rolling stock"
      ],
      "id": "en-지옥철-ko-noun-P7BECvvg",
      "links": [
        [
          "rail transport",
          "rail transport"
        ]
      ],
      "raw_glosses": [
        "(slang, rail transport) a very crowded subway line or rolling stock"
      ],
      "tags": [
        "slang"
      ],
      "topics": [
        "rail-transport",
        "railways",
        "transport"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[t͡ɕio̞k̚t͡ɕʰʌ̹ɭ]",
      "tags": [
        "SK-Standard",
        "Seoul"
      ]
    },
    {
      "hangeul": "지옥철"
    },
    {
      "other": "[지옥철]"
    }
  ],
  "word": "지옥철"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "地獄鐵"
      },
      "expansion": "Sino-Korean word from 地獄鐵",
      "name": "ko-etym-sino"
    },
    {
      "args": {
        "1": "ko",
        "2": "지옥(地獄)",
        "3": "지하철(地下鐵)",
        "t1": "hell",
        "t2": "subway"
      },
      "expansion": "Blend of 지옥(地獄) (jiok, “hell”) + 지하철(地下鐵) (jihacheol, “subway”)",
      "name": "blend"
    }
  ],
  "etymology_text": "Sino-Korean word from 地獄鐵. Blend of 지옥(地獄) (jiok, “hell”) + 지하철(地下鐵) (jihacheol, “subway”).",
  "forms": [
    {
      "form": "jiokcheol",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "地獄鐵",
      "tags": [
        "hanja"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "hanja": "地獄鐵"
      },
      "expansion": "지옥철 • (jiokcheol) (hanja 地獄鐵)",
      "name": "ko-noun"
    }
  ],
  "lang": "Korean",
  "lang_code": "ko",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Korean blends",
        "Korean entries with incorrect language header",
        "Korean lemmas",
        "Korean nouns",
        "Korean slang",
        "Korean terms with IPA pronunciation",
        "Korean terms with redundant script codes",
        "Korean terms with redundant transliterations",
        "Pages with 1 entry",
        "Pages with entries",
        "Sino-Korean words",
        "ko:Rail transportation"
      ],
      "glosses": [
        "a very crowded subway line or rolling stock"
      ],
      "links": [
        [
          "rail transport",
          "rail transport"
        ]
      ],
      "raw_glosses": [
        "(slang, rail transport) a very crowded subway line or rolling stock"
      ],
      "tags": [
        "slang"
      ],
      "topics": [
        "rail-transport",
        "railways",
        "transport"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[t͡ɕio̞k̚t͡ɕʰʌ̹ɭ]",
      "tags": [
        "SK-Standard",
        "Seoul"
      ]
    },
    {
      "hangeul": "지옥철"
    },
    {
      "other": "[지옥철]"
    }
  ],
  "word": "지옥철"
}