"Gainséis" meaning in Irish

{
  "forms": [
    {
      "form": "An Ghainséis",
      "tags": [
        "canonical",
        "feminine"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "ga",
        "2": "proper noun",
        "g": "f",
        "head": "An Ghainséis"
      },
      "expansion": "An Ghainséis f",
      "name": "head"
    }
  ],
  "lang": "Irish",
  "lang_code": "ga",
  "pos": "name",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Irish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "place",
          "langcode": "ga",
          "name": "India",
          "orig": "ga:India",
          "parents": [
            "Asia",
            "Earth",
            "Eurasia",
            "Nature",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "place",
          "langcode": "ga",
          "name": "Rivers",
          "orig": "ga:Rivers",
          "parents": [
            "Bodies of water",
            "Places",
            "Landforms",
            "Water",
            "Names",
            "Earth",
            "Liquids",
            "All topics",
            "Proper nouns",
            "Terms by semantic function",
            "Nature",
            "Matter",
            "Fundamental",
            "Nouns",
            "Chemistry",
            "Lemmas",
            "Sciences"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "The Ganges River"
      ],
      "id": "en-Gainséis-ga-name-DO2WVDqt",
      "links": [
        [
          "Ganges",
          "Ganges"
        ]
      ],
      "related": [
        {
          "word": "Ganga"
        }
      ]
    }
  ],
  "word": "Gainséis"
}

{
  "forms": [
    {
      "form": "An Ghainséis",
      "tags": [
        "canonical",
        "feminine"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "ga",
        "2": "proper noun",
        "g": "f",
        "head": "An Ghainséis"
      },
      "expansion": "An Ghainséis f",
      "name": "head"
    }
  ],
  "lang": "Irish",
  "lang_code": "ga",
  "pos": "name",
  "related": [
    {
      "word": "Ganga"
    }
  ],
  "senses": [
    {
      "categories": [
        "Irish entries with incorrect language header",
        "Irish feminine nouns",
        "Irish lemmas",
        "Irish proper nouns",
        "Pages with 1 entry",
        "Pages with entries",
        "ga:India",
        "ga:Rivers"
      ],
      "glosses": [
        "The Ganges River"
      ],
      "links": [
        [
          "Ganges",
          "Ganges"
        ]
      ]
    }
  ],
  "word": "Gainséis"
}