"buz" meaning in Breton

{
  "categories": [
    {
      "kind": "other",
      "name": "Mots en breton issus d’un mot en vieux breton",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Noms communs en breton",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Breton",
      "orig": "breton",
      "parents": [],
      "source": "w"
    }
  ],
  "derived": [
    {
      "word": "buzad"
    }
  ],
  "etymology_texts": [
    "Du vieux breton buz.",
    "À comparer avec les mots budd en gallois, budh en cornique, bua en gaélique, boudi- en gaulois (sens identique).",
    "→ voir Boadicée."
  ],
  "lang": "Breton",
  "lang_code": "br",
  "pos": "noun",
  "pos_title": "Nom commun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Termes vieillis en breton",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Victoire."
      ],
      "id": "fr-buz-br-noun-Nk7-BIEx",
      "tags": [
        "dated"
      ]
    },
    {
      "glosses": [
        "Gain, profit."
      ],
      "id": "fr-buz-br-noun-rSZAkY6M"
    }
  ],
  "sounds": [
    {
      "ipa": "\\ˈbyː(s)\\"
    }
  ],
  "tags": [
    "masculine"
  ],
  "word": "buz"
}

{
  "categories": [
    "Mots en breton issus d’un mot en vieux breton",
    "Noms communs en breton",
    "breton"
  ],
  "derived": [
    {
      "word": "buzad"
    }
  ],
  "etymology_texts": [
    "Du vieux breton buz.",
    "À comparer avec les mots budd en gallois, budh en cornique, bua en gaélique, boudi- en gaulois (sens identique).",
    "→ voir Boadicée."
  ],
  "lang": "Breton",
  "lang_code": "br",
  "pos": "noun",
  "pos_title": "Nom commun",
  "senses": [
    {
      "categories": [
        "Termes vieillis en breton"
      ],
      "glosses": [
        "Victoire."
      ],
      "tags": [
        "dated"
      ]
    },
    {
      "glosses": [
        "Gain, profit."
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\ˈbyː(s)\\"
    }
  ],
  "tags": [
    "masculine"
  ],
  "word": "buz"
}