"zaou" meaning in Breton

{
  "categories": [
    {
      "kind": "other",
      "name": "Formes d’adjectifs numéraux en breton",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Breton",
      "orig": "breton",
      "parents": [],
      "source": "w"
    }
  ],
  "forms": [
    {
      "form": "daou",
      "tags": [
        "unmutated"
      ]
    },
    {
      "form": "taou",
      "tags": [
        "mutation-hard"
      ]
    }
  ],
  "lang": "Breton",
  "lang_code": "br",
  "pos": "adj",
  "pos_title": "Forme d’adjectif numéral",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Exemples en breton",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "Langleiz, Romant ar Roue Arzhur, Éditions Al Liamm, 1975, page 43",
          "text": "Un herradig goude, e treuze ar roue pont-gwint Tintagell, heuliet gant e zaou vignon.",
          "translation": "Un petit instant après, le roi traversait le pont-levis de Tintagel, suivi de ses deux amis."
        }
      ],
      "form_of": [
        {
          "word": "daou"
        }
      ],
      "glosses": [
        "Forme mutée de daou par adoucissement."
      ],
      "id": "fr-zaou-br-adj-l2Z~aJYa"
    }
  ],
  "sounds": [
    {
      "ipa": "\\ˈzɔw\\"
    }
  ],
  "tags": [
    "form-of",
    "masculine",
    "numeral"
  ],
  "word": "zaou"
}

{
  "categories": [
    "Formes d’adjectifs numéraux en breton",
    "breton"
  ],
  "forms": [
    {
      "form": "daou",
      "tags": [
        "unmutated"
      ]
    },
    {
      "form": "taou",
      "tags": [
        "mutation-hard"
      ]
    }
  ],
  "lang": "Breton",
  "lang_code": "br",
  "pos": "adj",
  "pos_title": "Forme d’adjectif numéral",
  "senses": [
    {
      "categories": [
        "Exemples en breton"
      ],
      "examples": [
        {
          "ref": "Langleiz, Romant ar Roue Arzhur, Éditions Al Liamm, 1975, page 43",
          "text": "Un herradig goude, e treuze ar roue pont-gwint Tintagell, heuliet gant e zaou vignon.",
          "translation": "Un petit instant après, le roi traversait le pont-levis de Tintagel, suivi de ses deux amis."
        }
      ],
      "form_of": [
        {
          "word": "daou"
        }
      ],
      "glosses": [
        "Forme mutée de daou par adoucissement."
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\ˈzɔw\\"
    }
  ],
  "tags": [
    "form-of",
    "masculine",
    "numeral"
  ],
  "word": "zaou"
}