"ĉaŭ" meaning in Esperanto

{
  "etymology_templates": [
    {
      "args": {
        "1": "eo",
        "2": "it",
        "3": "ciao",
        "4": "",
        "5": "hello; goodbye"
      },
      "expansion": "Italian ciao (“hello; goodbye”)",
      "name": "bor"
    },
    {
      "args": {
        "1": "eo",
        "2": "vec",
        "3": "ciao",
        "4": "",
        "5": "hello; goodbye",
        "lit": "􂀿I am your􂁀 servant"
      },
      "expansion": "Venetan ciao (“hello; goodbye”, literally “[I am your] servant”)",
      "name": "der"
    },
    {
      "args": {
        "1": "eo",
        "2": "ML.",
        "3": "-"
      },
      "expansion": "Medieval Latin",
      "name": "der"
    },
    {
      "args": {
        "1": "eo",
        "2": "sklavo",
        "3": "slavo"
      },
      "expansion": "Doublet of sklavo and slavo",
      "name": "doublet"
    },
    {
      "args": {
        "1": "de",
        "2": "servus",
        "3": "",
        "4": "hello; goodbye",
        "w": "1"
      },
      "expansion": "German servus (“hello; goodbye”)",
      "name": "m+"
    }
  ],
  "etymology_text": "Borrowed from Italian ciao (“hello; goodbye”), from Venetan ciao (“hello; goodbye”, literally “[I am your] servant”), from Medieval Latin sclavus (“Slav; slave”). Doublet of sklavo and slavo. Colloquial use likely reinforced by German servus (“hello; goodbye”), which is used similarly.",
  "hyphenation": [
    "ĉaŭ"
  ],
  "lang": "Esperanto",
  "lang_code": "eo",
  "pos": "intj",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Esperanto entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Esperanto farewells",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Esperanto greetings",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Esperanto neologisms",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "ciao; hello, goodbye"
      ],
      "id": "en-ĉaŭ-eo-intj-Esx7uOxr",
      "links": [
        [
          "ciao",
          "ciao"
        ],
        [
          "hello",
          "hello"
        ],
        [
          "goodbye",
          "goodbye"
        ]
      ],
      "raw_glosses": [
        "(neologism, informal) ciao; hello, goodbye"
      ],
      "synonyms": [
        {
          "word": "saluton"
        },
        {
          "word": "adiaŭ"
        }
      ],
      "tags": [
        "informal",
        "neologism"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[t͡ʃau̯]"
    }
  ],
  "word": "ĉaŭ"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "eo",
        "2": "it",
        "3": "ciao",
        "4": "",
        "5": "hello; goodbye"
      },
      "expansion": "Italian ciao (“hello; goodbye”)",
      "name": "bor"
    },
    {
      "args": {
        "1": "eo",
        "2": "vec",
        "3": "ciao",
        "4": "",
        "5": "hello; goodbye",
        "lit": "􂀿I am your􂁀 servant"
      },
      "expansion": "Venetan ciao (“hello; goodbye”, literally “[I am your] servant”)",
      "name": "der"
    },
    {
      "args": {
        "1": "eo",
        "2": "ML.",
        "3": "-"
      },
      "expansion": "Medieval Latin",
      "name": "der"
    },
    {
      "args": {
        "1": "eo",
        "2": "sklavo",
        "3": "slavo"
      },
      "expansion": "Doublet of sklavo and slavo",
      "name": "doublet"
    },
    {
      "args": {
        "1": "de",
        "2": "servus",
        "3": "",
        "4": "hello; goodbye",
        "w": "1"
      },
      "expansion": "German servus (“hello; goodbye”)",
      "name": "m+"
    }
  ],
  "etymology_text": "Borrowed from Italian ciao (“hello; goodbye”), from Venetan ciao (“hello; goodbye”, literally “[I am your] servant”), from Medieval Latin sclavus (“Slav; slave”). Doublet of sklavo and slavo. Colloquial use likely reinforced by German servus (“hello; goodbye”), which is used similarly.",
  "hyphenation": [
    "ĉaŭ"
  ],
  "lang": "Esperanto",
  "lang_code": "eo",
  "pos": "intj",
  "senses": [
    {
      "categories": [
        "Esperanto doublets",
        "Esperanto entries with incorrect language header",
        "Esperanto farewells",
        "Esperanto greetings",
        "Esperanto informal terms",
        "Esperanto interjections",
        "Esperanto lemmas",
        "Esperanto neologisms",
        "Esperanto terms borrowed from Italian",
        "Esperanto terms derived from Italian",
        "Esperanto terms derived from Medieval Latin",
        "Esperanto terms derived from Venetan",
        "Esperanto terms with IPA pronunciation",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "glosses": [
        "ciao; hello, goodbye"
      ],
      "links": [
        [
          "ciao",
          "ciao"
        ],
        [
          "hello",
          "hello"
        ],
        [
          "goodbye",
          "goodbye"
        ]
      ],
      "raw_glosses": [
        "(neologism, informal) ciao; hello, goodbye"
      ],
      "synonyms": [
        {
          "word": "saluton"
        },
        {
          "word": "adiaŭ"
        }
      ],
      "tags": [
        "informal",
        "neologism"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[t͡ʃau̯]"
    }
  ],
  "word": "ĉaŭ"
}