"arwenn" meaning in Breton

{
  "categories": [
    {
      "kind": "other",
      "name": "Adjectifs en breton",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Breton",
      "orig": "breton",
      "parents": [],
      "source": "w"
    }
  ],
  "derived": [
    {
      "word": "arwennaat"
    }
  ],
  "etymology_texts": [
    "Dérivé de gwenn (« blanc »), avec le préfixe ar- (avec une mutation consonantique par adoucissement gwenn → wenn)."
  ],
  "lang": "Breton",
  "lang_code": "br",
  "pos": "adj",
  "pos_title": "Adjectif",
  "senses": [
    {
      "glosses": [
        "Blanchâtre."
      ],
      "id": "fr-arwenn-br-adj-g1RuZKBc"
    }
  ],
  "sounds": [
    {
      "ipa": "\\ˈar.wɛn\\"
    },
    {
      "ipa": "\\ˈar.ɥɛn\\"
    }
  ],
  "synonyms": [
    {
      "word": "azgwenn"
    },
    {
      "word": "damwenn"
    },
    {
      "word": "peuzwenn"
    }
  ],
  "word": "arwenn"
}

{
  "categories": [
    "Adjectifs en breton",
    "breton"
  ],
  "derived": [
    {
      "word": "arwennaat"
    }
  ],
  "etymology_texts": [
    "Dérivé de gwenn (« blanc »), avec le préfixe ar- (avec une mutation consonantique par adoucissement gwenn → wenn)."
  ],
  "lang": "Breton",
  "lang_code": "br",
  "pos": "adj",
  "pos_title": "Adjectif",
  "senses": [
    {
      "glosses": [
        "Blanchâtre."
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\ˈar.wɛn\\"
    },
    {
      "ipa": "\\ˈar.ɥɛn\\"
    }
  ],
  "synonyms": [
    {
      "word": "azgwenn"
    },
    {
      "word": "damwenn"
    },
    {
      "word": "peuzwenn"
    }
  ],
  "word": "arwenn"
}