"C$" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "Confederate"
      },
      "expansion": "Abbreviation of Confederate",
      "name": "abbreviation"
    }
  ],
  "etymology_text": "Abbreviation of Confederate + $ (“dollar”).",
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "symbol",
        "head": "C$"
      },
      "expansion": "C$",
      "name": "head"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "symbol",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English symbols",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 2 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "langcode": "en",
          "name": "American Civil War",
          "orig": "en:American Civil War",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "langcode": "en",
          "name": "Canada",
          "orig": "en:Canada",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "langcode": "en",
          "name": "Currencies",
          "orig": "en:Currencies",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "langcode": "en",
          "name": "Historical currencies",
          "orig": "en:Historical currencies",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Confederate dollar"
      ],
      "id": "en-C$-en-symbol-E-NQExiA"
    }
  ],
  "word": "C$"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "Confederate"
      },
      "expansion": "Abbreviation of Confederate",
      "name": "abbreviation"
    }
  ],
  "etymology_text": "Abbreviation of Confederate + $ (“dollar”).",
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "symbol",
        "head": "C$"
      },
      "expansion": "C$",
      "name": "head"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "symbol",
  "senses": [
    {
      "categories": [
        "English abbreviations",
        "English entries with incorrect language header",
        "English lemmas",
        "English symbols",
        "English terms spelled with $",
        "Pages with 2 entries",
        "Pages with entries",
        "en:American Civil War",
        "en:Canada",
        "en:Currencies",
        "en:Historical currencies"
      ],
      "glosses": [
        "Confederate dollar"
      ]
    }
  ],
  "word": "C$"
}