"open mike" meaning in English

{
  "forms": [
    {
      "form": "open mikes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "open mike (plural open mikes)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "open mic"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Alternative spelling of open mic"
      ],
      "id": "en-open_mike-en-noun-qSFPlpkw",
      "links": [
        [
          "open mic",
          "open mic#English"
        ]
      ],
      "raw_glosses": [
        "(nonstandard) Alternative spelling of open mic"
      ],
      "tags": [
        "alt-of",
        "alternative",
        "nonstandard"
      ]
    }
  ],
  "word": "open mike"
}

{
  "forms": [
    {
      "form": "open mikes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "open mike (plural open mikes)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "open mic"
        }
      ],
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nonstandard terms",
        "English nouns"
      ],
      "glosses": [
        "Alternative spelling of open mic"
      ],
      "links": [
        [
          "open mic",
          "open mic#English"
        ]
      ],
      "raw_glosses": [
        "(nonstandard) Alternative spelling of open mic"
      ],
      "tags": [
        "alt-of",
        "alternative",
        "nonstandard"
      ]
    }
  ],
  "word": "open mike"
}