"ABBA" meaning in English

{
  "etymology_text": "As an initialism of Agnetha, Björn, Benny, and Anni-Frid.",
  "head_templates": [
    {
      "args": {},
      "expansion": "ABBA",
      "name": "en-proper noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "name",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 2 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Music",
          "orig": "en:Music",
          "parents": [
            "Art",
            "Sound",
            "Culture",
            "Energy",
            "Society",
            "Nature",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "derived": [
        {
          "word": "Abbaesque"
        },
        {
          "word": "Abbamania"
        }
      ],
      "glosses": [
        "A popular Swedish music group from the 1970s, one of the best-selling music artists in history."
      ],
      "id": "en-ABBA-en-name-TFX05uo9",
      "links": [
        [
          "music",
          "music"
        ]
      ]
    }
  ],
  "word": "ABBA"
}

{
  "derived": [
    {
      "word": "Abbaesque"
    },
    {
      "word": "Abbamania"
    }
  ],
  "etymology_text": "As an initialism of Agnetha, Björn, Benny, and Anni-Frid.",
  "head_templates": [
    {
      "args": {},
      "expansion": "ABBA",
      "name": "en-proper noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "name",
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English lemmas",
        "English palindromes",
        "English proper nouns",
        "English uncountable nouns",
        "Pages with 2 entries",
        "Pages with entries",
        "en:Music"
      ],
      "glosses": [
        "A popular Swedish music group from the 1970s, one of the best-selling music artists in history."
      ],
      "links": [
        [
          "music",
          "music"
        ]
      ]
    }
  ],
  "word": "ABBA"
}