"ddwyieithog" meaning in Welsh

{
  "head_templates": [
    {
      "args": {
        "1": "cy",
        "2": "mutated adjective"
      },
      "expansion": "ddwyieithog",
      "name": "head"
    }
  ],
  "lang": "Welsh",
  "lang_code": "cy",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Welsh entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "form_of": [
        {
          "extra": "bilingual",
          "word": "dwyieithog"
        }
      ],
      "glosses": [
        "Soft mutation of dwyieithog (“bilingual”)."
      ],
      "id": "en-ddwyieithog-cy-adj-UhBcNHSS",
      "links": [
        [
          "dwyieithog",
          "dwyieithog#Welsh"
        ]
      ],
      "tags": [
        "form-of",
        "mutation-soft"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ðʊɨ̯ˈjei̯θɔɡ/",
      "tags": [
        "North-Wales"
      ]
    },
    {
      "ipa": "/ðʊi̯ˈjei̯θɔɡ/",
      "tags": [
        "South-Wales"
      ]
    }
  ],
  "word": "ddwyieithog"
}

{
  "head_templates": [
    {
      "args": {
        "1": "cy",
        "2": "mutated adjective"
      },
      "expansion": "ddwyieithog",
      "name": "head"
    }
  ],
  "lang": "Welsh",
  "lang_code": "cy",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        "Welsh entries with incorrect language header",
        "Welsh mutated adjectives",
        "Welsh non-lemma forms",
        "Welsh soft-mutation forms",
        "Welsh terms with IPA pronunciation"
      ],
      "form_of": [
        {
          "extra": "bilingual",
          "word": "dwyieithog"
        }
      ],
      "glosses": [
        "Soft mutation of dwyieithog (“bilingual”)."
      ],
      "links": [
        [
          "dwyieithog",
          "dwyieithog#Welsh"
        ]
      ],
      "tags": [
        "form-of",
        "mutation-soft"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ðʊɨ̯ˈjei̯θɔɡ/",
      "tags": [
        "North-Wales"
      ]
    },
    {
      "ipa": "/ðʊi̯ˈjei̯θɔɡ/",
      "tags": [
        "South-Wales"
      ]
    }
  ],
  "word": "ddwyieithog"
}