"agroaz" 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": "Rosacées en breton",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Breton",
      "orig": "breton",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "Du vieux breton ocroos.",
    "À comparer avec les mots egroes en gallois, agrows en cornique (sens identique)."
  ],
  "forms": [
    {
      "form": "agroazenn",
      "tags": [
        "singulative"
      ]
    },
    {
      "form": "agroazennoù",
      "tags": [
        "plural"
      ]
    }
  ],
  "lang": "Breton",
  "lang_code": "br",
  "pos": "noun",
  "pos_title": "Nom commun",
  "related": [
    {
      "raw_tags": [
        "Vannetais"
      ],
      "word": "agroez"
    }
  ],
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Plantes en breton",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Églantiers."
      ],
      "id": "fr-agroaz-br-noun-v5JVs9CK",
      "topics": [
        "botany"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\ˈa.ɡrwas\\"
    }
  ],
  "synonyms": [
    {
      "word": "roz-gouez"
    },
    {
      "word": "roz-ki"
    }
  ],
  "tags": [
    "collective"
  ],
  "word": "agroaz"
}

{
  "categories": [
    "Mots en breton issus d’un mot en vieux breton",
    "Noms communs en breton",
    "Rosacées en breton",
    "breton"
  ],
  "etymology_texts": [
    "Du vieux breton ocroos.",
    "À comparer avec les mots egroes en gallois, agrows en cornique (sens identique)."
  ],
  "forms": [
    {
      "form": "agroazenn",
      "tags": [
        "singulative"
      ]
    },
    {
      "form": "agroazennoù",
      "tags": [
        "plural"
      ]
    }
  ],
  "lang": "Breton",
  "lang_code": "br",
  "pos": "noun",
  "pos_title": "Nom commun",
  "related": [
    {
      "raw_tags": [
        "Vannetais"
      ],
      "word": "agroez"
    }
  ],
  "senses": [
    {
      "categories": [
        "Plantes en breton"
      ],
      "glosses": [
        "Églantiers."
      ],
      "topics": [
        "botany"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\ˈa.ɡrwas\\"
    }
  ],
  "synonyms": [
    {
      "word": "roz-gouez"
    },
    {
      "word": "roz-ki"
    }
  ],
  "tags": [
    "collective"
  ],
  "word": "agroaz"
}