"Ain" meaning in Breton

{
  "categories": [
    {
      "kind": "other",
      "name": "Noms propres en breton",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Breton",
      "orig": "breton",
      "parents": [],
      "source": "w"
    }
  ],
  "lang": "Breton",
  "lang_code": "br",
  "pos": "name",
  "pos_title": "Nom propre",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Départements de France en breton",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Ain (département français)."
      ],
      "id": "fr-Ain-br-name-CUjaiAcM",
      "topics": [
        "geography"
      ]
    },
    {
      "categories": [
        {
          "kind": "other",
          "name": "Cours d’eau de France en breton",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Ain (rivière française)."
      ],
      "id": "fr-Ain-br-name-Qzl6iud9",
      "topics": [
        "geography"
      ]
    }
  ],
  "word": "Ain"
}

{
  "categories": [
    "Noms propres en breton",
    "breton"
  ],
  "lang": "Breton",
  "lang_code": "br",
  "pos": "name",
  "pos_title": "Nom propre",
  "senses": [
    {
      "categories": [
        "Départements de France en breton"
      ],
      "glosses": [
        "Ain (département français)."
      ],
      "topics": [
        "geography"
      ]
    },
    {
      "categories": [
        "Cours d’eau de France en breton"
      ],
      "glosses": [
        "Ain (rivière française)."
      ],
      "topics": [
        "geography"
      ]
    }
  ],
  "word": "Ain"
}