"tchao" meaning in French

{
  "lang": "French",
  "lang_code": "fr",
  "pos": "intj",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "French entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "French farewells",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "english": "Bye, dear! Watch out for black ice!",
          "ref": "2004, Guy Josue Foumane, Cache-cache dans les ténèbres:",
          "text": "Tchao, chéri ! Fais attention au verglas !",
          "type": "quote"
        }
      ],
      "glosses": [
        "ciao; bye"
      ],
      "id": "en-tchao-fr-intj-8oqmi56Y",
      "links": [
        [
          "ciao",
          "ciao"
        ],
        [
          "bye",
          "bye"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/tʃa.o/"
    },
    {
      "ipa": "/tʃaw/"
    }
  ],
  "word": "tchao"
}

{
  "lang": "French",
  "lang_code": "fr",
  "pos": "intj",
  "senses": [
    {
      "categories": [
        "French 1-syllable words",
        "French 2-syllable words",
        "French entries with incorrect language header",
        "French farewells",
        "French interjections",
        "French lemmas",
        "French terms with IPA pronunciation",
        "French terms with quotations",
        "Pages with 1 entry",
        "Pages with entries",
        "Quotation templates to be cleaned"
      ],
      "examples": [
        {
          "english": "Bye, dear! Watch out for black ice!",
          "ref": "2004, Guy Josue Foumane, Cache-cache dans les ténèbres:",
          "text": "Tchao, chéri ! Fais attention au verglas !",
          "type": "quote"
        }
      ],
      "glosses": [
        "ciao; bye"
      ],
      "links": [
        [
          "ciao",
          "ciao"
        ],
        [
          "bye",
          "bye"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/tʃa.o/"
    },
    {
      "ipa": "/tʃaw/"
    }
  ],
  "word": "tchao"
}