"mirror ball" meaning in English

{
  "forms": [
    {
      "form": "mirror balls",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "mirror ball (plural mirror balls)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "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 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1983 August 6, Rob Schmieder, “Disco Consumers And Rock Activists”, in Gay Community News, page 15:",
          "text": "The B-52's influence is not obvious is not profound. They opened the door for rock's ever-growing invation ^([sic]) into discos. It is largely due to their popularity that you heard Bowie's \"Fashion\" or Tom Tom Club's \"Genius of Love\" playing in synch with mirror balls.",
          "type": "quote"
        }
      ],
      "glosses": [
        "A disco ball."
      ],
      "id": "en-mirror_ball-en-noun-15RJb49J",
      "links": [
        [
          "disco ball",
          "disco ball"
        ]
      ]
    }
  ],
  "word": "mirror ball"
}

{
  "forms": [
    {
      "form": "mirror balls",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "mirror ball (plural mirror balls)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with quotations",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "examples": [
        {
          "ref": "1983 August 6, Rob Schmieder, “Disco Consumers And Rock Activists”, in Gay Community News, page 15:",
          "text": "The B-52's influence is not obvious is not profound. They opened the door for rock's ever-growing invation ^([sic]) into discos. It is largely due to their popularity that you heard Bowie's \"Fashion\" or Tom Tom Club's \"Genius of Love\" playing in synch with mirror balls.",
          "type": "quote"
        }
      ],
      "glosses": [
        "A disco ball."
      ],
      "links": [
        [
          "disco ball",
          "disco ball"
        ]
      ]
    }
  ],
  "word": "mirror ball"
}