"mengleuz" meaning in Breton

{
  "categories": [
    {
      "kind": "other",
      "name": "Mots en breton issus d’un mot en moyen 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": "mengleuzeg"
    },
    {
      "word": "mengleuziañ"
    },
    {
      "word": "mengleuzier"
    },
    {
      "word": "mengleuzierezh"
    }
  ],
  "etymology_texts": [
    "→ voir maen ou min et kleuz.",
    "Du moyen breton mengleuz.",
    "À comparer avec les mots maenglawdd, mwynglawdd en gallois, moengleudh en cornique (sens identique)."
  ],
  "lang": "Breton",
  "lang_code": "br",
  "pos": "noun",
  "pos_title": "Nom commun",
  "senses": [
    {
      "glosses": [
        "carrière (de pierre, etc)."
      ],
      "id": "fr-mengleuz-br-noun-ddMEHQ3L"
    },
    {
      "glosses": [
        "Mine (de minerai, etc)."
      ],
      "id": "fr-mengleuz-br-noun-DDet5eyd"
    },
    {
      "glosses": [
        "ardoisière."
      ],
      "id": "fr-mengleuz-br-noun-rV6QJuhv",
      "raw_tags": [
        "parfois"
      ]
    }
  ],
  "tags": [
    "feminine",
    "plural"
  ],
  "word": "mengleuz"
}

{
  "categories": [
    "Mots en breton issus d’un mot en moyen breton",
    "Noms communs en breton",
    "breton"
  ],
  "derived": [
    {
      "word": "mengleuzeg"
    },
    {
      "word": "mengleuziañ"
    },
    {
      "word": "mengleuzier"
    },
    {
      "word": "mengleuzierezh"
    }
  ],
  "etymology_texts": [
    "→ voir maen ou min et kleuz.",
    "Du moyen breton mengleuz.",
    "À comparer avec les mots maenglawdd, mwynglawdd en gallois, moengleudh en cornique (sens identique)."
  ],
  "lang": "Breton",
  "lang_code": "br",
  "pos": "noun",
  "pos_title": "Nom commun",
  "senses": [
    {
      "glosses": [
        "carrière (de pierre, etc)."
      ]
    },
    {
      "glosses": [
        "Mine (de minerai, etc)."
      ]
    },
    {
      "glosses": [
        "ardoisière."
      ],
      "raw_tags": [
        "parfois"
      ]
    }
  ],
  "tags": [
    "feminine",
    "plural"
  ],
  "word": "mengleuz"
}