"newyddair" meaning in Welsh

{
  "etymology_templates": [
    {
      "args": {
        "1": "cy",
        "2": "newydd",
        "3": "gair",
        "t1": "new",
        "t2": "word"
      },
      "expansion": "newydd (“new”) + gair (“word”)",
      "name": "com"
    }
  ],
  "etymology_text": "newydd (“new”) + gair (“word”)",
  "forms": [
    {
      "form": "newyddeiriau",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "m",
        "2": "newyddeiriau"
      },
      "expansion": "newyddair m (plural newyddeiriau, not mutable)",
      "name": "cy-noun"
    }
  ],
  "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": "topical",
          "langcode": "cy",
          "name": "Lexicography",
          "orig": "cy:Lexicography",
          "parents": [
            "Linguistics",
            "Language",
            "Social sciences",
            "Communication",
            "Sciences",
            "Society",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "neologism"
      ],
      "id": "en-newyddair-cy-noun-wVtTph58",
      "links": [
        [
          "neologism",
          "neologism"
        ]
      ],
      "tags": [
        "masculine",
        "not-mutable"
      ]
    }
  ],
  "word": "newyddair"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "cy",
        "2": "newydd",
        "3": "gair",
        "t1": "new",
        "t2": "word"
      },
      "expansion": "newydd (“new”) + gair (“word”)",
      "name": "com"
    }
  ],
  "etymology_text": "newydd (“new”) + gair (“word”)",
  "forms": [
    {
      "form": "newyddeiriau",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "m",
        "2": "newyddeiriau"
      },
      "expansion": "newyddair m (plural newyddeiriau, not mutable)",
      "name": "cy-noun"
    }
  ],
  "lang": "Welsh",
  "lang_code": "cy",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Welsh compound terms",
        "Welsh countable nouns",
        "Welsh entries with incorrect language header",
        "Welsh lemmas",
        "Welsh masculine nouns",
        "Welsh non-mutable terms",
        "Welsh nouns",
        "Welsh nouns with red links in their headword lines",
        "cy:Lexicography"
      ],
      "glosses": [
        "neologism"
      ],
      "links": [
        [
          "neologism",
          "neologism"
        ]
      ],
      "tags": [
        "masculine",
        "not-mutable"
      ]
    }
  ],
  "word": "newyddair"
}