"fy" meaning in Gallois

{
  "categories": [
    {
      "kind": "other",
      "name": "Adjectifs possessifs en gallois",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Gallois",
      "orig": "gallois",
      "parents": [],
      "source": "w"
    }
  ],
  "lang": "Gallois",
  "lang_code": "cy",
  "pos": "adj",
  "pos_title": "Adjectif possessif",
  "related": [
    {
      "word": "f’"
    },
    {
      "word": "’y"
    }
  ],
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Exemples en gallois",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "Fy mhen. Fy nhad. Fy nhgathod.",
          "translation": "Ma tête. Mon père. Mes chats."
        }
      ],
      "glosses": [
        "Possessif de la première personne du singulier ; provoque la mutation nasale."
      ],
      "id": "fr-fy-cy-adj-s7sDAaan"
    }
  ],
  "tags": [
    "possessive"
  ],
  "word": "fy"
}

{
  "categories": [
    "Adjectifs possessifs en gallois",
    "gallois"
  ],
  "lang": "Gallois",
  "lang_code": "cy",
  "pos": "adj",
  "pos_title": "Adjectif possessif",
  "related": [
    {
      "word": "f’"
    },
    {
      "word": "’y"
    }
  ],
  "senses": [
    {
      "categories": [
        "Exemples en gallois"
      ],
      "examples": [
        {
          "text": "Fy mhen. Fy nhad. Fy nhgathod.",
          "translation": "Ma tête. Mon père. Mes chats."
        }
      ],
      "glosses": [
        "Possessif de la première personne du singulier ; provoque la mutation nasale."
      ]
    }
  ],
  "tags": [
    "possessive"
  ],
  "word": "fy"
}