"백악기" meaning in Korean

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "Sino-Korean"
      },
      "expansion": "Sino-Korean",
      "name": "l"
    },
    {
      "args": {
        "1": "ko",
        "2": "白堊紀",
        "gloss": ""
      },
      "expansion": "白堊紀",
      "name": "m"
    },
    {
      "args": {
        "1": "白堊紀"
      },
      "expansion": "Sino-Korean word from 白堊紀",
      "name": "ko-etym-sino"
    }
  ],
  "etymology_text": "Sino-Korean word from 白堊紀.",
  "forms": [
    {
      "form": "Baegakgi",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "白堊紀",
      "tags": [
        "hanja"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "hanja": "白堊紀"
      },
      "expansion": "백악기 • (Baegakgi) (hanja 白堊紀)",
      "name": "ko-proper noun"
    }
  ],
  "lang": "Korean",
  "lang_code": "ko",
  "pos": "name",
  "senses": [
    {
      "categories": [
        {
          "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 non-redundant manual transliterations",
          "parents": [
            "Terms with non-redundant manual transliterations",
            "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": "Sino-Korean words",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "ko",
          "name": "Geology",
          "orig": "ko:Geology",
          "parents": [
            "Earth sciences",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Cretaceous"
      ],
      "id": "en-백악기-ko-name-5aDTG~tl",
      "links": [
        [
          "geology",
          "geology"
        ],
        [
          "Cretaceous",
          "Cretaceous"
        ]
      ],
      "raw_glosses": [
        "(geology) Cretaceous"
      ],
      "topics": [
        "geography",
        "geology",
        "natural-sciences"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[pɛɡa̠k̚k͈i]",
      "tags": [
        "SK-Standard",
        "Seoul"
      ]
    },
    {
      "ipa": "[pe̞ɡa̠k̚k͈i]",
      "tags": [
        "SK-Standard",
        "Seoul"
      ]
    }
  ],
  "word": "백악기"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "Sino-Korean"
      },
      "expansion": "Sino-Korean",
      "name": "l"
    },
    {
      "args": {
        "1": "ko",
        "2": "白堊紀",
        "gloss": ""
      },
      "expansion": "白堊紀",
      "name": "m"
    },
    {
      "args": {
        "1": "白堊紀"
      },
      "expansion": "Sino-Korean word from 白堊紀",
      "name": "ko-etym-sino"
    }
  ],
  "etymology_text": "Sino-Korean word from 白堊紀.",
  "forms": [
    {
      "form": "Baegakgi",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "白堊紀",
      "tags": [
        "hanja"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "hanja": "白堊紀"
      },
      "expansion": "백악기 • (Baegakgi) (hanja 白堊紀)",
      "name": "ko-proper noun"
    }
  ],
  "lang": "Korean",
  "lang_code": "ko",
  "pos": "name",
  "senses": [
    {
      "categories": [
        "Korean entries with incorrect language header",
        "Korean lemmas",
        "Korean proper nouns",
        "Korean terms with IPA pronunciation",
        "Korean terms with non-redundant manual transliterations",
        "Korean terms with redundant script codes",
        "Sino-Korean words",
        "ko:Geology"
      ],
      "glosses": [
        "Cretaceous"
      ],
      "links": [
        [
          "geology",
          "geology"
        ],
        [
          "Cretaceous",
          "Cretaceous"
        ]
      ],
      "raw_glosses": [
        "(geology) Cretaceous"
      ],
      "topics": [
        "geography",
        "geology",
        "natural-sciences"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[pɛɡa̠k̚k͈i]",
      "tags": [
        "SK-Standard",
        "Seoul"
      ]
    },
    {
      "ipa": "[pe̞ɡa̠k̚k͈i]",
      "tags": [
        "SK-Standard",
        "Seoul"
      ]
    }
  ],
  "word": "백악기"
}