"col ceathar" meaning in Irish

{
  "etymology_templates": [
    {
      "args": {
        "1": "ga",
        "2": "col",
        "3": "",
        "4": "relation"
      },
      "expansion": "col (“relation”)",
      "name": "m"
    },
    {
      "args": {
        "1": "ga",
        "2": "ceathair"
      },
      "expansion": "ceathair",
      "name": "m"
    }
  ],
  "etymology_text": "From col (“relation”) + ceathair.",
  "head_templates": [
    {
      "args": {
        "1": "ga",
        "2": "noun",
        "g": "m"
      },
      "expansion": "col ceathar m",
      "name": "head"
    }
  ],
  "lang": "Irish",
  "lang_code": "ga",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "col ceathrair"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "Irish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Irish entries with topic categories using raw markup",
          "parents": [
            "Entries with topic categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "ga",
          "name": "Family members",
          "orig": "ga:Family members",
          "parents": [
            "Family",
            "People",
            "Human",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Alternative form of col ceathrair"
      ],
      "id": "en-col_ceathar-ga-noun-6hURKxi9",
      "links": [
        [
          "col ceathrair",
          "col ceathrair#Irish"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative",
        "masculine"
      ]
    }
  ],
  "word": "col ceathar"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "ga",
        "2": "col",
        "3": "",
        "4": "relation"
      },
      "expansion": "col (“relation”)",
      "name": "m"
    },
    {
      "args": {
        "1": "ga",
        "2": "ceathair"
      },
      "expansion": "ceathair",
      "name": "m"
    }
  ],
  "etymology_text": "From col (“relation”) + ceathair.",
  "head_templates": [
    {
      "args": {
        "1": "ga",
        "2": "noun",
        "g": "m"
      },
      "expansion": "col ceathar m",
      "name": "head"
    }
  ],
  "lang": "Irish",
  "lang_code": "ga",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "col ceathrair"
        }
      ],
      "categories": [
        "Irish entries with incorrect language header",
        "Irish entries with topic categories using raw markup",
        "Irish lemmas",
        "Irish masculine nouns",
        "Irish multiword terms",
        "Irish nouns",
        "ga:Family members"
      ],
      "glosses": [
        "Alternative form of col ceathrair"
      ],
      "links": [
        [
          "col ceathrair",
          "col ceathrair#Irish"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative",
        "masculine"
      ]
    }
  ],
  "word": "col ceathar"
}