"ㅊㅋ" meaning in Korean

{
  "etymology_templates": [
    {
      "args": {
        "1": "축하"
      },
      "expansion": "축하 (chukha)",
      "name": "ko-l"
    }
  ],
  "etymology_text": "Abbreviation of 축하 (chukha).",
  "forms": [
    {
      "form": "chk",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "interjection"
      },
      "expansion": "ㅊㅋ • (chk)",
      "name": "ko-pos"
    }
  ],
  "lang": "Korean",
  "lang_code": "ko",
  "pos": "intj",
  "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 entries with language name categories using raw markup",
          "parents": [
            "Entries with language name categories using raw markup",
            "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"
        }
      ],
      "glosses": [
        "Text messaging spelling of 축하하다 (chukhahada)"
      ],
      "id": "en-ㅊㅋ-ko-intj-G83QLqiJ",
      "links": [
        [
          "Text messaging",
          "text messaging"
        ],
        [
          "축하하다",
          "축하하다#Korean"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[t͡ɕʰkʰ]",
      "tags": [
        "SK-Standard",
        "Seoul"
      ]
    },
    {
      "other": "[ㅊㅋ]"
    }
  ],
  "word": "ㅊㅋ"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "축하"
      },
      "expansion": "축하 (chukha)",
      "name": "ko-l"
    }
  ],
  "etymology_text": "Abbreviation of 축하 (chukha).",
  "forms": [
    {
      "form": "chk",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "interjection"
      },
      "expansion": "ㅊㅋ • (chk)",
      "name": "ko-pos"
    }
  ],
  "lang": "Korean",
  "lang_code": "ko",
  "pos": "intj",
  "senses": [
    {
      "categories": [
        "Korean entries with incorrect language header",
        "Korean entries with language name categories using raw markup",
        "Korean initialisms",
        "Korean interjections",
        "Korean lemmas",
        "Korean terms with IPA pronunciation",
        "Korean terms with redundant script codes",
        "Korean terms with redundant transliterations",
        "Korean text messaging slang"
      ],
      "glosses": [
        "Text messaging spelling of 축하하다 (chukhahada)"
      ],
      "links": [
        [
          "Text messaging",
          "text messaging"
        ],
        [
          "축하하다",
          "축하하다#Korean"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[t͡ɕʰkʰ]",
      "tags": [
        "SK-Standard",
        "Seoul"
      ]
    },
    {
      "other": "[ㅊㅋ]"
    }
  ],
  "word": "ㅊㅋ"
}