"nythod" meaning in Welsh

{
  "etymology_templates": [
    {
      "args": {
        "1": "cy",
        "2": "nyth",
        "3": "-od",
        "gloss1": "nest"
      },
      "expansion": "nyth (“nest”) + -od",
      "name": "affix"
    }
  ],
  "etymology_text": "From nyth (“nest”) + -od.",
  "lang": "Welsh",
  "lang_code": "cy",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Welsh entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Welsh terms suffixed with -od",
          "parents": [],
          "source": "w"
        }
      ],
      "form_of": [
        {
          "word": "nyth"
        }
      ],
      "glosses": [
        "plural of nyth"
      ],
      "id": "en-nythod-cy-noun-nBoTjSEW",
      "links": [
        [
          "nyth",
          "nyth#Welsh"
        ]
      ],
      "tags": [
        "feminine",
        "form-of",
        "masculine",
        "not-mutable",
        "plural"
      ]
    }
  ],
  "word": "nythod"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "cy",
        "2": "nyth",
        "3": "-od",
        "gloss1": "nest"
      },
      "expansion": "nyth (“nest”) + -od",
      "name": "affix"
    }
  ],
  "etymology_text": "From nyth (“nest”) + -od.",
  "lang": "Welsh",
  "lang_code": "cy",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Welsh entries with incorrect language header",
        "Welsh non-lemma forms",
        "Welsh non-mutable terms",
        "Welsh noun plural forms",
        "Welsh terms suffixed with -od"
      ],
      "form_of": [
        {
          "word": "nyth"
        }
      ],
      "glosses": [
        "plural of nyth"
      ],
      "links": [
        [
          "nyth",
          "nyth#Welsh"
        ]
      ],
      "tags": [
        "feminine",
        "form-of",
        "masculine",
        "not-mutable",
        "plural"
      ]
    }
  ],
  "word": "nythod"
}