"nai" meaning in Welsh

{
  "etymology_templates": [
    {
      "args": {
        "1": "cy",
        "2": "wlm",
        "3": "nei"
      },
      "expansion": "Middle Welsh nei",
      "name": "inh"
    },
    {
      "args": {
        "1": "cy",
        "2": "cel-bry-pro",
        "3": "*nei"
      },
      "expansion": "Proto-Brythonic *nei",
      "name": "inh"
    },
    {
      "args": {
        "1": "cy",
        "2": "cel-pro",
        "3": "*neɸūss"
      },
      "expansion": "Proto-Celtic *neɸūss",
      "name": "inh"
    },
    {
      "args": {
        "1": "cy",
        "2": "ine-pro",
        "3": "*népōts"
      },
      "expansion": "Proto-Indo-European *népōts",
      "name": "inh"
    }
  ],
  "etymology_text": "From Middle Welsh nei, from Proto-Brythonic *nei, from Proto-Celtic *neɸūss, from Proto-Indo-European *népōts.",
  "forms": [
    {
      "form": "neiaint",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "m",
        "2": "neiaint"
      },
      "expansion": "nai m (plural neiaint, not mutable)",
      "name": "cy-noun"
    }
  ],
  "lang": "Welsh",
  "lang_code": "cy",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Pages with 20 entries",
          "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": "Male family members",
          "orig": "cy:Male family members",
          "parents": [
            "Family members",
            "Male people",
            "Family",
            "Male",
            "People",
            "Gender",
            "Human",
            "Biology",
            "Psychology",
            "Sociology",
            "All topics",
            "Sciences",
            "Social sciences",
            "Fundamental",
            "Society"
          ],
          "source": "w"
        }
      ],
      "derived": [
        {
          "word": "neigarwch"
        }
      ],
      "glosses": [
        "nephew"
      ],
      "id": "en-nai-cy-noun-8QBOkm6O",
      "links": [
        [
          "nephew",
          "nephew"
        ]
      ],
      "tags": [
        "masculine",
        "not-mutable"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/nai̯/"
    }
  ],
  "word": "nai"
}

{
  "derived": [
    {
      "word": "neigarwch"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "cy",
        "2": "wlm",
        "3": "nei"
      },
      "expansion": "Middle Welsh nei",
      "name": "inh"
    },
    {
      "args": {
        "1": "cy",
        "2": "cel-bry-pro",
        "3": "*nei"
      },
      "expansion": "Proto-Brythonic *nei",
      "name": "inh"
    },
    {
      "args": {
        "1": "cy",
        "2": "cel-pro",
        "3": "*neɸūss"
      },
      "expansion": "Proto-Celtic *neɸūss",
      "name": "inh"
    },
    {
      "args": {
        "1": "cy",
        "2": "ine-pro",
        "3": "*népōts"
      },
      "expansion": "Proto-Indo-European *népōts",
      "name": "inh"
    }
  ],
  "etymology_text": "From Middle Welsh nei, from Proto-Brythonic *nei, from Proto-Celtic *neɸūss, from Proto-Indo-European *népōts.",
  "forms": [
    {
      "form": "neiaint",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "m",
        "2": "neiaint"
      },
      "expansion": "nai m (plural neiaint, not mutable)",
      "name": "cy-noun"
    }
  ],
  "lang": "Welsh",
  "lang_code": "cy",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Pages with 20 entries",
        "Pages with entries",
        "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",
        "Welsh terms derived from Middle Welsh",
        "Welsh terms derived from Proto-Brythonic",
        "Welsh terms derived from Proto-Celtic",
        "Welsh terms derived from Proto-Indo-European",
        "Welsh terms inherited from Middle Welsh",
        "Welsh terms inherited from Proto-Brythonic",
        "Welsh terms inherited from Proto-Celtic",
        "Welsh terms inherited from Proto-Indo-European",
        "cy:Male family members"
      ],
      "glosses": [
        "nephew"
      ],
      "links": [
        [
          "nephew",
          "nephew"
        ]
      ],
      "tags": [
        "masculine",
        "not-mutable"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/nai̯/"
    }
  ],
  "word": "nai"
}