"allas" meaning in Breton

{
  "categories": [
    {
      "kind": "other",
      "name": "Interjections en breton",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Mots en breton issus d’un mot en moyen breton",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Breton",
      "orig": "breton",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "Du moyen breton allas."
  ],
  "lang": "Breton",
  "lang_code": "br",
  "pos": "intj",
  "pos_title": "Interjection",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Exemples en breton",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "bold_text_offsets": [
            [
              4,
              9
            ]
          ],
          "ref": "Fañch an Uhel, Kontadennoù ar Bobl /5, Éditions Al Liamm, 1994, page 169",
          "text": "Met allas ! re vras e oa e gof.",
          "translation": "Mais hélas ! son ventre était trop gros."
        }
      ],
      "glosses": [
        "Hélas !"
      ],
      "id": "fr-allas-br-intj--wi855Hi"
    }
  ],
  "sounds": [
    {
      "ipa": "\\ˈa.lːas\\"
    }
  ],
  "synonyms": [
    {
      "word": "acʼh"
    },
    {
      "word": "siwazh"
    }
  ],
  "word": "allas"
}

{
  "categories": [
    "Interjections en breton",
    "Mots en breton issus d’un mot en moyen breton",
    "breton"
  ],
  "etymology_texts": [
    "Du moyen breton allas."
  ],
  "lang": "Breton",
  "lang_code": "br",
  "pos": "intj",
  "pos_title": "Interjection",
  "senses": [
    {
      "categories": [
        "Exemples en breton"
      ],
      "examples": [
        {
          "bold_text_offsets": [
            [
              4,
              9
            ]
          ],
          "ref": "Fañch an Uhel, Kontadennoù ar Bobl /5, Éditions Al Liamm, 1994, page 169",
          "text": "Met allas ! re vras e oa e gof.",
          "translation": "Mais hélas ! son ventre était trop gros."
        }
      ],
      "glosses": [
        "Hélas !"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\ˈa.lːas\\"
    }
  ],
  "synonyms": [
    {
      "word": "acʼh"
    },
    {
      "word": "siwazh"
    }
  ],
  "word": "allas"
}