"실수" meaning in Korean

{
  "etymology_number": 1,
  "etymology_templates": [
    {
      "args": {
        "1": "失",
        "2": "to lose, make mistake, to neglect",
        "3": "手",
        "4": "hand"
      },
      "expansion": "Sino-Korean word from 失手, from 失 (“to lose, make mistake, to neglect”) + 手 (“hand”)",
      "name": "ko-etym-Sino"
    }
  ],
  "etymology_text": "Sino-Korean word from 失手, from 失 (“to lose, make mistake, to neglect”) + 手 (“hand”)",
  "forms": [
    {
      "form": "silsu",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "失手",
      "tags": [
        "hanja"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "hanja": "失手"
      },
      "expansion": "실수 • (silsu) (hanja 失手)",
      "name": "ko-noun"
    }
  ],
  "lang": "Korean",
  "lang_code": "ko",
  "pos": "noun",
  "senses": [
    {
      "derived": [
        {
          "alt": "失手—",
          "roman": "silsuhada",
          "word": "실수하다"
        }
      ],
      "glosses": [
        "mistake"
      ],
      "id": "en-실수-ko-noun-GzT~tejd",
      "links": [
        [
          "mistake",
          "mistake"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ɕʰiɭs͈u]",
      "tags": [
        "SK-Standard",
        "Seoul"
      ]
    },
    {
      "hangeul": "실쑤"
    },
    {
      "other": "[실쑤]"
    }
  ],
  "word": "실수"
}

{
  "etymology_number": 2,
  "etymology_templates": [
    {
      "args": {
        "1": "實",
        "2": "real, true, solid, honest",
        "3": "數",
        "4": "number"
      },
      "expansion": "Sino-Korean word from 實數, from 實 (“real, true, solid, honest”) + 數 (“number”)",
      "name": "ko-etym-Sino"
    }
  ],
  "etymology_text": "Sino-Korean word from 實數, from 實 (“real, true, solid, honest”) + 數 (“number”)",
  "forms": [
    {
      "form": "silsu",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "實數",
      "tags": [
        "hanja"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "hanja": "實數"
      },
      "expansion": "실수 • (silsu) (hanja 實數)",
      "name": "ko-noun"
    }
  ],
  "lang": "Korean",
  "lang_code": "ko",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "topical",
          "langcode": "ko",
          "name": "Mathematics",
          "orig": "ko:Mathematics",
          "parents": [
            "Formal sciences",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "_dis": "25 75",
          "kind": "other",
          "name": "Korean entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "12 88",
          "kind": "other",
          "name": "Korean terms with redundant script codes",
          "parents": [
            "Terms with redundant script codes",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "11 89",
          "kind": "other",
          "name": "Korean terms with redundant transliterations",
          "parents": [
            "Terms with redundant transliterations",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "29 71",
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "20 80",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "42 58",
          "kind": "other",
          "name": "Sino-Korean words",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "real number"
      ],
      "id": "en-실수-ko-noun-UHV3BmzJ",
      "links": [
        [
          "mathematics",
          "mathematics"
        ],
        [
          "real number",
          "real number"
        ]
      ],
      "raw_glosses": [
        "(mathematics) real number"
      ],
      "topics": [
        "mathematics",
        "sciences"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ɕʰiɭs͈u]",
      "tags": [
        "SK-Standard",
        "Seoul"
      ]
    },
    {
      "hangeul": "실쑤"
    },
    {
      "other": "[실쑤]"
    }
  ],
  "word": "실수"
}

{
  "categories": [
    "Korean entries with incorrect language header",
    "Korean lemmas",
    "Korean nouns",
    "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"
  ],
  "derived": [
    {
      "alt": "失手—",
      "roman": "silsuhada",
      "word": "실수하다"
    }
  ],
  "etymology_number": 1,
  "etymology_templates": [
    {
      "args": {
        "1": "失",
        "2": "to lose, make mistake, to neglect",
        "3": "手",
        "4": "hand"
      },
      "expansion": "Sino-Korean word from 失手, from 失 (“to lose, make mistake, to neglect”) + 手 (“hand”)",
      "name": "ko-etym-Sino"
    }
  ],
  "etymology_text": "Sino-Korean word from 失手, from 失 (“to lose, make mistake, to neglect”) + 手 (“hand”)",
  "forms": [
    {
      "form": "silsu",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "失手",
      "tags": [
        "hanja"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "hanja": "失手"
      },
      "expansion": "실수 • (silsu) (hanja 失手)",
      "name": "ko-noun"
    }
  ],
  "lang": "Korean",
  "lang_code": "ko",
  "pos": "noun",
  "senses": [
    {
      "glosses": [
        "mistake"
      ],
      "links": [
        [
          "mistake",
          "mistake"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ɕʰiɭs͈u]",
      "tags": [
        "SK-Standard",
        "Seoul"
      ]
    },
    {
      "hangeul": "실쑤"
    },
    {
      "other": "[실쑤]"
    }
  ],
  "word": "실수"
}

{
  "categories": [
    "Korean entries with incorrect language header",
    "Korean lemmas",
    "Korean nouns",
    "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"
  ],
  "etymology_number": 2,
  "etymology_templates": [
    {
      "args": {
        "1": "實",
        "2": "real, true, solid, honest",
        "3": "數",
        "4": "number"
      },
      "expansion": "Sino-Korean word from 實數, from 實 (“real, true, solid, honest”) + 數 (“number”)",
      "name": "ko-etym-Sino"
    }
  ],
  "etymology_text": "Sino-Korean word from 實數, from 實 (“real, true, solid, honest”) + 數 (“number”)",
  "forms": [
    {
      "form": "silsu",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "實數",
      "tags": [
        "hanja"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "hanja": "實數"
      },
      "expansion": "실수 • (silsu) (hanja 實數)",
      "name": "ko-noun"
    }
  ],
  "lang": "Korean",
  "lang_code": "ko",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "ko:Mathematics"
      ],
      "glosses": [
        "real number"
      ],
      "links": [
        [
          "mathematics",
          "mathematics"
        ],
        [
          "real number",
          "real number"
        ]
      ],
      "raw_glosses": [
        "(mathematics) real number"
      ],
      "topics": [
        "mathematics",
        "sciences"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ɕʰiɭs͈u]",
      "tags": [
        "SK-Standard",
        "Seoul"
      ]
    },
    {
      "hangeul": "실쑤"
    },
    {
      "other": "[실쑤]"
    }
  ],
  "word": "실수"
}