"tywyll" meaning in Gallois

{
  "categories": [
    {
      "kind": "other",
      "name": "Adjectifs en gallois",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Mots en gallois issus d’un mot en moyen gallois",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Gallois",
      "orig": "gallois",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "Du moyen gallois tywyll.",
    "Voir le mot breton teñval."
  ],
  "lang": "Gallois",
  "lang_code": "cy",
  "pos": "adj",
  "pos_title": "Adjectif",
  "senses": [
    {
      "glosses": [
        "Obscur, sombre."
      ],
      "id": "fr-tywyll-cy-adj-LxX-5nl7"
    }
  ],
  "word": "tywyll"
}

{
  "categories": [
    "Adjectifs en gallois",
    "Mots en gallois issus d’un mot en moyen gallois",
    "gallois"
  ],
  "etymology_texts": [
    "Du moyen gallois tywyll.",
    "Voir le mot breton teñval."
  ],
  "lang": "Gallois",
  "lang_code": "cy",
  "pos": "adj",
  "pos_title": "Adjectif",
  "senses": [
    {
      "glosses": [
        "Obscur, sombre."
      ]
    }
  ],
  "word": "tywyll"
}