"ulvenn" meaning in Breton

{
  "categories": [
    {
      "kind": "other",
      "name": "Mots en breton issus d’un mot en moyen breton",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Noms communs en breton",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Breton",
      "orig": "breton",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Étymologies en breton incluant une reconstruction",
      "parents": [],
      "source": "w"
    }
  ],
  "derived": [
    {
      "word": "ulvenniñ"
    },
    {
      "word": "ulvennus"
    }
  ],
  "etymology_texts": [
    "Du moyen breton eluenn.",
    "À rapprocher du gallois ulw « cendres ; poussière ; petites particules ».",
    "Issu du celtique *φoulwo-."
  ],
  "lang": "Breton",
  "lang_code": "br",
  "pos": "noun",
  "pos_title": "Nom commun",
  "related": [
    {
      "word": "poultrenn"
    },
    {
      "word": "ulocʼh"
    }
  ],
  "senses": [
    {
      "glosses": [
        "Fine poussière."
      ],
      "id": "fr-ulvenn-br-noun-9AtCRZ2v"
    },
    {
      "glosses": [
        "Bout de fil."
      ],
      "id": "fr-ulvenn-br-noun-qBEsjvly"
    },
    {
      "glosses": [
        "Flammèche d’étoupe ou de paille."
      ],
      "id": "fr-ulvenn-br-noun-QKA784qY"
    }
  ],
  "sounds": [
    {
      "ipa": "\\ˈyl.vɛn\\"
    }
  ],
  "tags": [
    "feminine",
    "plural"
  ],
  "word": "ulvenn"
}

{
  "categories": [
    "Mots en breton issus d’un mot en moyen breton",
    "Noms communs en breton",
    "breton",
    "Étymologies en breton incluant une reconstruction"
  ],
  "derived": [
    {
      "word": "ulvenniñ"
    },
    {
      "word": "ulvennus"
    }
  ],
  "etymology_texts": [
    "Du moyen breton eluenn.",
    "À rapprocher du gallois ulw « cendres ; poussière ; petites particules ».",
    "Issu du celtique *φoulwo-."
  ],
  "lang": "Breton",
  "lang_code": "br",
  "pos": "noun",
  "pos_title": "Nom commun",
  "related": [
    {
      "word": "poultrenn"
    },
    {
      "word": "ulocʼh"
    }
  ],
  "senses": [
    {
      "glosses": [
        "Fine poussière."
      ]
    },
    {
      "glosses": [
        "Bout de fil."
      ]
    },
    {
      "glosses": [
        "Flammèche d’étoupe ou de paille."
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\ˈyl.vɛn\\"
    }
  ],
  "tags": [
    "feminine",
    "plural"
  ],
  "word": "ulvenn"
}