"CD" meaning in Irish

{
  "etymology_templates": [
    {
      "args": {
        "1": "ga",
        "2": "en",
        "3": "CD"
      },
      "expansion": "English CD",
      "name": "bor"
    }
  ],
  "etymology_text": "Initialism of ceirnín dlúth (“compact disc”), but simultaneously a borrowing from English CD.",
  "head_templates": [
    {
      "args": {
        "1": "ga",
        "2": "noun",
        "cat2": "initialisms",
        "g": "m"
      },
      "expansion": "CD m",
      "name": "head"
    }
  ],
  "lang": "Irish",
  "lang_code": "ga",
  "pos": "noun",
  "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 21 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "CD, compact disc"
      ],
      "id": "en-CD-ga-noun--6Dkvrmd",
      "links": [
        [
          "CD",
          "#English"
        ],
        [
          "compact disc",
          "compact disc"
        ]
      ],
      "tags": [
        "masculine"
      ]
    }
  ],
  "word": "CD"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "ga",
        "2": "en",
        "3": "CD"
      },
      "expansion": "English CD",
      "name": "bor"
    }
  ],
  "etymology_text": "Initialism of ceirnín dlúth (“compact disc”), but simultaneously a borrowing from English CD.",
  "head_templates": [
    {
      "args": {
        "1": "ga",
        "2": "noun",
        "cat2": "initialisms",
        "g": "m"
      },
      "expansion": "CD m",
      "name": "head"
    }
  ],
  "lang": "Irish",
  "lang_code": "ga",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Irish entries with incorrect language header",
        "Irish initialisms",
        "Irish lemmas",
        "Irish masculine nouns",
        "Irish nouns",
        "Irish terms borrowed from English",
        "Irish terms derived from English",
        "Pages with 21 entries",
        "Pages with entries"
      ],
      "glosses": [
        "CD, compact disc"
      ],
      "links": [
        [
          "CD",
          "#English"
        ],
        [
          "compact disc",
          "compact disc"
        ]
      ],
      "tags": [
        "masculine"
      ]
    }
  ],
  "word": "CD"
}