"OO" meaning in Korean

{
  "etymology_templates": [
    {
      "args": {
        "1": "ko",
        "2": "ja",
        "3": "-"
      },
      "expansion": "Japanese",
      "name": "bor"
    },
    {
      "args": {
        "1": "点々",
        "2": "てんてん",
        "t": "dots"
      },
      "expansion": "点々(てんてん) (tenten, “dots”)",
      "name": "ja-r"
    },
    {
      "args": {
        "1": "ko",
        "2": "ja",
        "3": "-",
        "nocap": "y"
      },
      "expansion": "orthographic borrowing from Japanese",
      "name": "obor"
    },
    {
      "args": {
        "1": "○%○",
        "2": "まる%まる",
        "linkto": "○"
      },
      "expansion": "○(まる)○(まる) (marumaru)",
      "name": "ja-r"
    }
  ],
  "etymology_text": "From Japanese 点々(てんてん) (tenten, “dots”). The spelling is an orthographic borrowing from Japanese ○(まる)○(まる) (marumaru).",
  "forms": [
    {
      "form": "땡땡",
      "tags": [
        "hangeul"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "hangeul": "땡땡"
      },
      "expansion": "OO • (ttaengttaeng) (hangeul 땡땡)",
      "name": "ko-noun"
    }
  ],
  "lang": "Korean",
  "lang_code": "ko",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Japanese terms with non-redundant manual transliterations",
          "parents": [
            "Terms with non-redundant manual transliterations",
            "Entry maintenance"
          ],
          "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 in nonstandard scripts",
          "parents": [
            "Terms in nonstandard scripts",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Korean terms with non-redundant manual script codes",
          "parents": [
            "Terms with non-redundant manual script codes",
            "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 non-redundant non-automated sortkeys",
          "parents": [
            "Terms with non-redundant non-automated sortkeys",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "english": "Mr. Kim X.",
          "roman": "Kim Ttaengttaeng ssi",
          "text": "김OO씨",
          "type": "example"
        }
      ],
      "glosses": [
        "X (hidden name)"
      ],
      "id": "en-OO-ko-noun-AS2VGti~",
      "links": [
        [
          "X",
          "X"
        ]
      ],
      "synonyms": [
        {
          "alt": "某",
          "word": "모"
        },
        {
          "word": "XX"
        }
      ]
    }
  ],
  "word": "OO"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "ko",
        "2": "ja",
        "3": "-"
      },
      "expansion": "Japanese",
      "name": "bor"
    },
    {
      "args": {
        "1": "点々",
        "2": "てんてん",
        "t": "dots"
      },
      "expansion": "点々(てんてん) (tenten, “dots”)",
      "name": "ja-r"
    },
    {
      "args": {
        "1": "ko",
        "2": "ja",
        "3": "-",
        "nocap": "y"
      },
      "expansion": "orthographic borrowing from Japanese",
      "name": "obor"
    },
    {
      "args": {
        "1": "○%○",
        "2": "まる%まる",
        "linkto": "○"
      },
      "expansion": "○(まる)○(まる) (marumaru)",
      "name": "ja-r"
    }
  ],
  "etymology_text": "From Japanese 点々(てんてん) (tenten, “dots”). The spelling is an orthographic borrowing from Japanese ○(まる)○(まる) (marumaru).",
  "forms": [
    {
      "form": "땡땡",
      "tags": [
        "hangeul"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "hangeul": "땡땡"
      },
      "expansion": "OO • (ttaengttaeng) (hangeul 땡땡)",
      "name": "ko-noun"
    }
  ],
  "lang": "Korean",
  "lang_code": "ko",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Japanese terms with non-redundant manual transliterations",
        "Korean entries with incorrect language header",
        "Korean lemmas",
        "Korean nouns",
        "Korean orthographic borrowings from Japanese",
        "Korean terms borrowed from Japanese",
        "Korean terms derived from Japanese",
        "Korean terms in nonstandard scripts",
        "Korean terms with non-redundant manual script codes",
        "Korean terms with non-redundant manual transliterations",
        "Korean terms with non-redundant non-automated sortkeys",
        "Korean terms with usage examples"
      ],
      "examples": [
        {
          "english": "Mr. Kim X.",
          "roman": "Kim Ttaengttaeng ssi",
          "text": "김OO씨",
          "type": "example"
        }
      ],
      "glosses": [
        "X (hidden name)"
      ],
      "links": [
        [
          "X",
          "X"
        ]
      ],
      "synonyms": [
        {
          "alt": "某",
          "word": "모"
        },
        {
          "word": "XX"
        }
      ]
    }
  ],
  "word": "OO"
}