"^`lowbar`^" meaning in Translingual

{
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        "2": "顔文字の起源 (^_^)"
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      "expansion": "顔文字の起源 (_)",
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  "etymology_text": "First used in 1986 in an online Deaf community in Japan, independently from :-). The difference between :-) and ^_^ is likely to come from Western and Eastern ways of looking at facial expressions.",
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        "head": "^_^",
        "head2": "",
        "head3": "",
        "head4": "",
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        "sc": "Zsym",
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      "expansion": "^_^",
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      "expansion": "^_^",
      "name": "mul-symbol"
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  ],
  "lang": "Translingual",
  "lang_code": "mul",
  "original_title": "Unsupported titles/^`lowbar`^",
  "pos": "symbol",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
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          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
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          "kind": "other",
          "name": "Translingual emoticons",
          "parents": [],
          "source": "w"
        },
        {
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          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
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            "Terms with non-redundant manual script codes",
            "Entry maintenance"
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        },
        {
          "kind": "other",
          "name": "Unsupported titles",
          "parents": [
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "mul",
          "name": "Happiness",
          "orig": "mul:Happiness",
          "parents": [
            "Emotions",
            "Mind",
            "Human",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "2002 January 14, Stuart Dawson, “Re: This made me look at YATA in a whole new light.. o_o”, in uk.media.animation.anime (Usenet; in English):",
          "text": "having now watched it I just have one thing to say... So who's got the bollocks to do some cosplay with me then? ^_^",
          "type": "quote"
        },
        {
          "ref": "2015 November 1, Uncle Monster [username], “Re: OT: Another sure sign of a country in decline”, in alt.home.repair (Usenet; in English):",
          "text": "She's very cute and talented but if she's really a smoker, she'll wind up looking old before her time. It would be a shame because I love her singing. ^_^",
          "type": "quote"
        }
      ],
      "glosses": [
        "An emoticon representing a grinning face."
      ],
      "id": "en-^`lowbar`^-mul-symbol-6rgr5c3i",
      "links": [
        [
          "emoticon",
          "emoticon#English"
        ],
        [
          "grin",
          "grin"
        ]
      ],
      "related": [
        {
          "word": "-)"
        }
      ],
      "synonyms": [
        {
          "word": "^^"
        },
        {
          "word": "^.^"
        },
        {
          "word": "^w^"
        }
      ]
    }
  ],
  "word": "^`lowbar`^"
}

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  "etymology_templates": [
    {
      "args": {
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        "2": "顔文字の起源 (^_^)"
      },
      "expansion": "顔文字の起源 (_)",
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      "expansion": "^_^",
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    },
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      "name": "nobr"
    },
    {
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        "1": ": ("
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      "expansion": ": (",
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    },
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      "args": {
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      "expansion": "^.^",
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    },
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      },
      "expansion": ";_;",
      "name": "nobr"
    }
  ],
  "etymology_text": "First used in 1986 in an online Deaf community in Japan, independently from :-). The difference between :-) and ^_^ is likely to come from Western and Eastern ways of looking at facial expressions.",
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  ],
  "lang": "Translingual",
  "lang_code": "mul",
  "original_title": "Unsupported titles/^`lowbar`^",
  "pos": "symbol",
  "related": [
    {
      "word": "-)"
    }
  ],
  "senses": [
    {
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        "Pages with 1 entry",
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        "Translingual palindromes",
        "Translingual symbols",
        "Translingual terms spelled with ^",
        "Translingual terms spelled with underscore",
        "Translingual terms with non-redundant manual script codes",
        "Translingual terms with quotations",
        "Unsupported titles",
        "mul:Happiness"
      ],
      "examples": [
        {
          "ref": "2002 January 14, Stuart Dawson, “Re: This made me look at YATA in a whole new light.. o_o”, in uk.media.animation.anime (Usenet; in English):",
          "text": "having now watched it I just have one thing to say... So who's got the bollocks to do some cosplay with me then? ^_^",
          "type": "quote"
        },
        {
          "ref": "2015 November 1, Uncle Monster [username], “Re: OT: Another sure sign of a country in decline”, in alt.home.repair (Usenet; in English):",
          "text": "She's very cute and talented but if she's really a smoker, she'll wind up looking old before her time. It would be a shame because I love her singing. ^_^",
          "type": "quote"
        }
      ],
      "glosses": [
        "An emoticon representing a grinning face."
      ],
      "links": [
        [
          "emoticon",
          "emoticon#English"
        ],
        [
          "grin",
          "grin"
        ]
      ]
    }
  ],
  "synonyms": [
    {
      "word": "^^"
    },
    {
      "word": "^.^"
    },
    {
      "word": "^w^"
    }
  ],
  "word": "^`lowbar`^"
}