"서른" meaning in Korean

{
  "etymology_templates": [
    {
      "args": {
        "1": "ss",
        "2": "셜흔〮",
        "3": "syèlhún"
      },
      "expansion": "First attested in the Seokbo sangjeol (釋譜詳節 / 석보상절), 1447, as Middle Korean 셜흔〮 (Yale: syèlhún).",
      "name": "ko-etym-native"
    }
  ],
  "etymology_text": "First attested in the Seokbo sangjeol (釋譜詳節 / 석보상절), 1447, as Middle Korean 셜흔〮 (Yale: syèlhún).",
  "forms": [
    {
      "form": "seoreun",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "numeral"
      },
      "expansion": "서른 • (seoreun)",
      "name": "ko-pos"
    }
  ],
  "lang": "Korean",
  "lang_code": "ko",
  "pos": "num",
  "senses": [
    {
      "categories": [
        {
          "kind": "topical",
          "name": "Korean cardinal numbers",
          "parents": [
            "Cardinal numbers",
            "Numbers",
            "All topics",
            "Terms by semantic function",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Korean entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "name": "Korean numeral symbols",
          "parents": [
            "Numeral symbols",
            "Symbols",
            "Letters, symbols, and punctuation",
            "Orthography",
            "Writing",
            "Human behaviour",
            "Language",
            "Human",
            "Communication",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Korean terms with non-redundant non-automated sortkeys",
          "parents": [
            "Terms with non-redundant non-automated sortkeys",
            "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": "Native Korean words",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "thirty"
      ],
      "id": "en-서른-ko-num-rKX7Wdtp",
      "links": [
        [
          "thirty",
          "thirty"
        ]
      ],
      "qualifier": "native numeral",
      "raw_glosses": [
        "(native numeral) thirty"
      ],
      "synonyms": [
        {
          "alt": "三十",
          "word": "삼십"
        }
      ],
      "wikipedia": [
        "Middle Chinese"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[sʰʌ̹ɾɯn]",
      "tags": [
        "SK-Standard",
        "Seoul"
      ]
    },
    {
      "hangeul": "서른"
    },
    {
      "other": "[서른]"
    }
  ],
  "word": "서른"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "ss",
        "2": "셜흔〮",
        "3": "syèlhún"
      },
      "expansion": "First attested in the Seokbo sangjeol (釋譜詳節 / 석보상절), 1447, as Middle Korean 셜흔〮 (Yale: syèlhún).",
      "name": "ko-etym-native"
    }
  ],
  "etymology_text": "First attested in the Seokbo sangjeol (釋譜詳節 / 석보상절), 1447, as Middle Korean 셜흔〮 (Yale: syèlhún).",
  "forms": [
    {
      "form": "seoreun",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "numeral"
      },
      "expansion": "서른 • (seoreun)",
      "name": "ko-pos"
    }
  ],
  "lang": "Korean",
  "lang_code": "ko",
  "pos": "num",
  "senses": [
    {
      "categories": [
        "Korean cardinal numbers",
        "Korean entries with incorrect language header",
        "Korean lemmas",
        "Korean numeral symbols",
        "Korean numerals",
        "Korean terms derived from Middle Korean",
        "Korean terms inherited from Middle Korean",
        "Korean terms with IPA pronunciation",
        "Korean terms with non-redundant non-automated sortkeys",
        "Korean terms with redundant script codes",
        "Korean terms with redundant transliterations",
        "Native Korean words",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "glosses": [
        "thirty"
      ],
      "links": [
        [
          "thirty",
          "thirty"
        ]
      ],
      "qualifier": "native numeral",
      "raw_glosses": [
        "(native numeral) thirty"
      ],
      "synonyms": [
        {
          "alt": "三十",
          "word": "삼십"
        }
      ],
      "wikipedia": [
        "Middle Chinese"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[sʰʌ̹ɾɯn]",
      "tags": [
        "SK-Standard",
        "Seoul"
      ]
    },
    {
      "hangeul": "서른"
    },
    {
      "other": "[서른]"
    }
  ],
  "word": "서른"
}