"héili-" meaning in Irish

{
  "head_templates": [
    {
      "args": {
        "1": "ga",
        "2": "prefix"
      },
      "expansion": "héili-",
      "name": "head"
    }
  ],
  "lang": "Irish",
  "lang_code": "ga",
  "pos": "prefix",
  "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"
        }
      ],
      "glosses": [
        "helio-"
      ],
      "id": "en-héili--ga-prefix-4bKbCuQk",
      "links": [
        [
          "helio-",
          "helio-"
        ]
      ],
      "synonyms": [
        {
          "word": "héilea-"
        }
      ],
      "tags": [
        "morpheme"
      ]
    }
  ],
  "word": "héili-"
}

{
  "head_templates": [
    {
      "args": {
        "1": "ga",
        "2": "prefix"
      },
      "expansion": "héili-",
      "name": "head"
    }
  ],
  "lang": "Irish",
  "lang_code": "ga",
  "pos": "prefix",
  "senses": [
    {
      "categories": [
        "Irish entries with incorrect language header",
        "Irish lemmas",
        "Irish prefixes",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "glosses": [
        "helio-"
      ],
      "links": [
        [
          "helio-",
          "helio-"
        ]
      ],
      "tags": [
        "morpheme"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "héilea-"
    }
  ],
  "word": "héili-"
}