"o-zeir" 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 teir (« trois (féminin) »)."
  ],
  "lang": "Breton",
  "lang_code": "br",
  "pos": "adv",
  "pos_title": "Adverbe",
  "related": [
    {
      "word": "o-unan"
    },
    {
      "word": "o-daou"
    },
    {
      "word": "o-div"
    },
    {
      "word": "o-zri"
    },
    {
      "word": "o-fevar"
    },
    {
      "word": "o-feder"
    },
    {
      "word": "o-femp"
    },
    {
      "word": "o-zrizek"
    }
  ],
  "senses": [
    {
      "examples": [
        {
          "ref": "Fañch an Uhel, Kontadennoù ar Bobl /3, Éditions Al Liamm, 1988, page 13",
          "text": "Bihanig a savas neuze ur planken eus ar solier, a diskennas en kambr ar jeantezed, hag a drocʼhas o goûg dezhe o-zeir.",
          "translation": "Bihanig souleva alors une latte du plancher, descendit dans la chambre des géantes, et leur trancha la gorge à toutes les trois."
        }
      ],
      "glosses": [
        "Elles trois, toutes les trois."
      ],
      "id": "fr-o-zeir-br-adv-xrm0rE5n"
    }
  ],
  "sounds": [
    {
      "ipa": "\\oˈzɛjr\\"
    }
  ],
  "word": "o-zeir"
}

{
  "categories": [
    "Adverbes en breton",
    "breton"
  ],
  "etymology_texts": [
    "Composé de o (« leur, leurs ») et de teir (« trois (féminin) »)."
  ],
  "lang": "Breton",
  "lang_code": "br",
  "pos": "adv",
  "pos_title": "Adverbe",
  "related": [
    {
      "word": "o-unan"
    },
    {
      "word": "o-daou"
    },
    {
      "word": "o-div"
    },
    {
      "word": "o-zri"
    },
    {
      "word": "o-fevar"
    },
    {
      "word": "o-feder"
    },
    {
      "word": "o-femp"
    },
    {
      "word": "o-zrizek"
    }
  ],
  "senses": [
    {
      "examples": [
        {
          "ref": "Fañch an Uhel, Kontadennoù ar Bobl /3, Éditions Al Liamm, 1988, page 13",
          "text": "Bihanig a savas neuze ur planken eus ar solier, a diskennas en kambr ar jeantezed, hag a drocʼhas o goûg dezhe o-zeir.",
          "translation": "Bihanig souleva alors une latte du plancher, descendit dans la chambre des géantes, et leur trancha la gorge à toutes les trois."
        }
      ],
      "glosses": [
        "Elles trois, toutes les trois."
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\oˈzɛjr\\"
    }
  ],
  "word": "o-zeir"
}