"ĉ." meaning in Espéranto

{
  "categories": [
    {
      "kind": "other",
      "name": "Abréviations en espéranto",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Adverbes en espéranto",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Dates manquantes en espéranto",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Lemmes en espéranto",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Espéranto",
      "orig": "espéranto",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Ĉ en espéranto",
      "orig": "ĉ en espéranto",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "(Date à préciser) (Abréviation) de ĉirkaŭ."
  ],
  "lang": "Espéranto",
  "lang_code": "eo",
  "pos": "adv",
  "pos_title": "Adverbe",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Wiktionnaire:Exemples manquants en espéranto",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Environ ; aux alentours de."
      ],
      "id": "fr-ĉ.-eo-adv-hEO7bUBE"
    }
  ],
  "word": "ĉ."
}

{
  "categories": [
    "Abréviations en espéranto",
    "Adverbes en espéranto",
    "Dates manquantes en espéranto",
    "Lemmes en espéranto",
    "espéranto",
    "ĉ en espéranto"
  ],
  "etymology_texts": [
    "(Date à préciser) (Abréviation) de ĉirkaŭ."
  ],
  "lang": "Espéranto",
  "lang_code": "eo",
  "pos": "adv",
  "pos_title": "Adverbe",
  "senses": [
    {
      "categories": [
        "Wiktionnaire:Exemples manquants en espéranto"
      ],
      "glosses": [
        "Environ ; aux alentours de."
      ]
    }
  ],
  "word": "ĉ."
}