"Ffinneg" meaning in Welsh

{
  "head_templates": [
    {
      "args": {
        "1": "f"
      },
      "expansion": "Ffinneg f (not mutable)",
      "name": "cy-proper noun"
    }
  ],
  "lang": "Welsh",
  "lang_code": "cy",
  "pos": "name",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Welsh entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "cy",
          "name": "Languages",
          "orig": "cy:Languages",
          "parents": [
            "Language",
            "Names",
            "Communication",
            "All topics",
            "Proper nouns",
            "Terms by semantic function",
            "Fundamental",
            "Nouns",
            "Lemmas"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Finnish (language)"
      ],
      "id": "en-Ffinneg-cy-name-VTDCTXB6",
      "links": [
        [
          "Finnish",
          "Finnish"
        ]
      ],
      "tags": [
        "feminine",
        "not-mutable"
      ]
    }
  ],
  "word": "Ffinneg"
}

{
  "head_templates": [
    {
      "args": {
        "1": "f"
      },
      "expansion": "Ffinneg f (not mutable)",
      "name": "cy-proper noun"
    }
  ],
  "lang": "Welsh",
  "lang_code": "cy",
  "pos": "name",
  "senses": [
    {
      "categories": [
        "Pages with 1 entry",
        "Pages with entries",
        "Welsh entries with incorrect language header",
        "Welsh feminine nouns",
        "Welsh lemmas",
        "Welsh non-mutable terms",
        "Welsh proper nouns",
        "cy:Languages"
      ],
      "glosses": [
        "Finnish (language)"
      ],
      "links": [
        [
          "Finnish",
          "Finnish"
        ]
      ],
      "tags": [
        "feminine",
        "not-mutable"
      ]
    }
  ],
  "word": "Ffinneg"
}