"vau" meaning in Latin

{
  "etymology_templates": [
    {
      "args": {
        "1": "la",
        "2": ":bor",
        "3": "grc:*ϝαῦ",
        "text": "+",
        "title": "vau",
        "tree": "1"
      },
      "expansion": "[Appendix:Glossary#loanword|Borrowed]] from\", \"terms\" : [ { \"children\" : [ ], \"lang_name\" : \"Ancient Greek\", \"term\" : \"*ϝαῦ\", \"status\" : \"missing\", \"lang\" : \"grc\" } ], \"keyword\" : \"bor\" } ], \"lang_name\" : \"Latin\", \"term\" : \"vau\", \"status\" : \"ok\", \"lang\" : \"la\" }\" data-lang=\"la\" data-title=\"vau\">\nBorrowed from Ancient Greek *ϝαῦ (*waû).",
      "name": "ety"
    }
  ],
  "etymology_text": "Borrowed from Ancient Greek *ϝαῦ (*waû).",
  "head_templates": [
    {
      "args": {
        "1": "vau",
        "g": "n",
        "indecl": "1"
      },
      "expansion": "vau n (indeclinable)",
      "name": "la-noun"
    }
  ],
  "lang": "Latin",
  "lang_code": "la",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Latin entries referencing missing etymons",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Latin entries with etymology texts",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Latin entries with etymon",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Latin entries with incorrect language header",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages using etymon with no ID",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 13 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with etymon",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "langcode": "la",
          "name": "Greek letter names",
          "orig": "la:Greek letter names",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "wau; digamma (Ϝ)"
      ],
      "id": "en-vau-la-noun-J3ewINB3",
      "links": [
        [
          "wau",
          "wau"
        ],
        [
          "digamma",
          "digamma"
        ],
        [
          "Ϝ",
          "Ϝ#Ancient_Greek"
        ]
      ],
      "tags": [
        "indeclinable",
        "neuter"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ˈwau̯]",
      "tags": [
        "Classical-Latin"
      ]
    },
    {
      "ipa": "[ˈvaːu̯]",
      "note": "modern Italianate Ecclesiastical"
    }
  ],
  "word": "vau"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "la",
        "2": ":bor",
        "3": "grc:*ϝαῦ",
        "text": "+",
        "title": "vau",
        "tree": "1"
      },
      "expansion": "[Appendix:Glossary#loanword|Borrowed]] from\", \"terms\" : [ { \"children\" : [ ], \"lang_name\" : \"Ancient Greek\", \"term\" : \"*ϝαῦ\", \"status\" : \"missing\", \"lang\" : \"grc\" } ], \"keyword\" : \"bor\" } ], \"lang_name\" : \"Latin\", \"term\" : \"vau\", \"status\" : \"ok\", \"lang\" : \"la\" }\" data-lang=\"la\" data-title=\"vau\">\nBorrowed from Ancient Greek *ϝαῦ (*waû).",
      "name": "ety"
    }
  ],
  "etymology_text": "Borrowed from Ancient Greek *ϝαῦ (*waû).",
  "head_templates": [
    {
      "args": {
        "1": "vau",
        "g": "n",
        "indecl": "1"
      },
      "expansion": "vau n (indeclinable)",
      "name": "la-noun"
    }
  ],
  "lang": "Latin",
  "lang_code": "la",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Latin 1-syllable words",
        "Latin entries referencing missing etymons",
        "Latin entries with etymology texts",
        "Latin entries with etymon",
        "Latin entries with incorrect language header",
        "Latin indeclinable nouns",
        "Latin lemmas",
        "Latin neuter indeclinable nouns",
        "Latin neuter nouns",
        "Latin nouns",
        "Latin palindromes",
        "Latin terms borrowed from Ancient Greek",
        "Latin terms derived from Ancient Greek",
        "Latin terms with IPA pronunciation",
        "Pages using etymon with no ID",
        "Pages with 13 entries",
        "Pages with entries",
        "Pages with etymon",
        "la:Greek letter names"
      ],
      "glosses": [
        "wau; digamma (Ϝ)"
      ],
      "links": [
        [
          "wau",
          "wau"
        ],
        [
          "digamma",
          "digamma"
        ],
        [
          "Ϝ",
          "Ϝ#Ancient_Greek"
        ]
      ],
      "tags": [
        "indeclinable",
        "neuter"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ˈwau̯]",
      "tags": [
        "Classical-Latin"
      ]
    },
    {
      "ipa": "[ˈvaːu̯]",
      "note": "modern Italianate Ecclesiastical"
    }
  ],
  "word": "vau"
}