"o-div" meaning in Breton

{
  "categories": [
    {
      "kind": "other",
      "name": "Adverbes en breton",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Breton",
      "orig": "breton",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "Composé de o (« leur, leurs ») et de div (« deux (féminin) »)."
  ],
  "lang": "Breton",
  "lang_code": "br",
  "pos": "adv",
  "pos_id": "br-adv-1",
  "pos_title": "Adverbe",
  "related": [
    {
      "word": "o-unan"
    },
    {
      "word": "o-daou"
    },
    {
      "word": "o-zri"
    },
    {
      "word": "o-zeir"
    },
    {
      "word": "o-fevar"
    },
    {
      "word": "o-feder"
    },
    {
      "word": "o-femp"
    },
    {
      "word": "o-zrizek"
    }
  ],
  "senses": [
    {
      "examples": [
        {
          "ref": "Erwan ar Moal, Pipi Gonto, Kemper, 1925, page 8",
          "text": "…, an diou rocʼh a glozas o-diou an eil war eben evel eur geno, ….",
          "translation": "…, les deux roches se fermèrent toutes les deux l’une sur l’autre comme une bouche, …."
        }
      ],
      "glosses": [
        "Elles deux, toutes les deux."
      ],
      "id": "fr-o-div-br-adv-fUJDdFZY"
    }
  ],
  "sounds": [
    {
      "ipa": "\\oˈdiw\\"
    }
  ],
  "word": "o-div"
}

{
  "categories": [
    "Adverbes en breton",
    "breton"
  ],
  "etymology_texts": [
    "Composé de o (« leur, leurs ») et de div (« deux (féminin) »)."
  ],
  "lang": "Breton",
  "lang_code": "br",
  "pos": "adv",
  "pos_id": "br-adv-1",
  "pos_title": "Adverbe",
  "related": [
    {
      "word": "o-unan"
    },
    {
      "word": "o-daou"
    },
    {
      "word": "o-zri"
    },
    {
      "word": "o-zeir"
    },
    {
      "word": "o-fevar"
    },
    {
      "word": "o-feder"
    },
    {
      "word": "o-femp"
    },
    {
      "word": "o-zrizek"
    }
  ],
  "senses": [
    {
      "examples": [
        {
          "ref": "Erwan ar Moal, Pipi Gonto, Kemper, 1925, page 8",
          "text": "…, an diou rocʼh a glozas o-diou an eil war eben evel eur geno, ….",
          "translation": "…, les deux roches se fermèrent toutes les deux l’une sur l’autre comme une bouche, …."
        }
      ],
      "glosses": [
        "Elles deux, toutes les deux."
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\oˈdiw\\"
    }
  ],
  "word": "o-div"
}