"agerdd" meaning in Welsh

{
  "forms": [
    {
      "form": "agerddau",
      "tags": [
        "plural"
      ]
    },
    {
      "form": "no-table-tags",
      "source": "mutation",
      "tags": [
        "table-tags"
      ]
    },
    {
      "form": "cy-mut",
      "source": "mutation",
      "tags": [
        "inflection-template"
      ]
    },
    {
      "form": "agerdd",
      "source": "mutation",
      "tags": [
        "error-unrecognized-form"
      ]
    },
    {
      "form": "hagerdd",
      "source": "mutation",
      "tags": [
        "prothesis-h"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "mf",
        "2": "agerddau"
      },
      "expansion": "agerdd m or f (plural agerddau)",
      "name": "cy-noun"
    }
  ],
  "inflection_templates": [
    {
      "args": {},
      "name": "cy-mut"
    }
  ],
  "lang": "Welsh",
  "lang_code": "cy",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "steam",
          "word": "ager"
        }
      ],
      "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": "Gases",
          "orig": "cy:Gases",
          "parents": [
            "Matter",
            "Chemistry",
            "Nature",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "derived": [
        {
          "english": "steamship",
          "word": "agerddlong"
        }
      ],
      "glosses": [
        "Alternative form of ager (“steam”)"
      ],
      "id": "en-agerdd-cy-noun-gudhmuwI",
      "links": [
        [
          "ager",
          "ager#Welsh"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative",
        "feminine",
        "masculine"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈaɡɛrð/",
      "tags": [
        "North-Wales"
      ]
    },
    {
      "ipa": "/ˈa(ː)ɡɛrð/",
      "tags": [
        "South-Wales"
      ]
    },
    {
      "rhymes": "-aɡɛrð"
    }
  ],
  "word": "agerdd"
}

{
  "derived": [
    {
      "english": "steamship",
      "word": "agerddlong"
    }
  ],
  "forms": [
    {
      "form": "agerddau",
      "tags": [
        "plural"
      ]
    },
    {
      "form": "no-table-tags",
      "source": "mutation",
      "tags": [
        "table-tags"
      ]
    },
    {
      "form": "cy-mut",
      "source": "mutation",
      "tags": [
        "inflection-template"
      ]
    },
    {
      "form": "agerdd",
      "source": "mutation",
      "tags": [
        "error-unrecognized-form"
      ]
    },
    {
      "form": "hagerdd",
      "source": "mutation",
      "tags": [
        "prothesis-h"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "mf",
        "2": "agerddau"
      },
      "expansion": "agerdd m or f (plural agerddau)",
      "name": "cy-noun"
    }
  ],
  "inflection_templates": [
    {
      "args": {},
      "name": "cy-mut"
    }
  ],
  "lang": "Welsh",
  "lang_code": "cy",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "steam",
          "word": "ager"
        }
      ],
      "categories": [
        "Pages with 1 entry",
        "Pages with entries",
        "Rhymes:Welsh/aɡɛrð",
        "Rhymes:Welsh/aɡɛrð/2 syllables",
        "Welsh countable nouns",
        "Welsh entries with incorrect language header",
        "Welsh feminine nouns",
        "Welsh lemmas",
        "Welsh masculine nouns",
        "Welsh nouns",
        "Welsh nouns with multiple genders",
        "Welsh nouns with red links in their headword lines",
        "cy:Gases"
      ],
      "glosses": [
        "Alternative form of ager (“steam”)"
      ],
      "links": [
        [
          "ager",
          "ager#Welsh"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative",
        "feminine",
        "masculine"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈaɡɛrð/",
      "tags": [
        "North-Wales"
      ]
    },
    {
      "ipa": "/ˈa(ː)ɡɛrð/",
      "tags": [
        "South-Wales"
      ]
    },
    {
      "rhymes": "-aɡɛrð"
    }
  ],
  "word": "agerdd"
}