"junk conference" meaning in English

{
  "forms": [
    {
      "form": "junk conferences",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "junk conference (plural junk conferences)",
      "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": [
        {
          "text": "He found a junk conference to attend so he could go somewhere warm last winter.",
          "type": "example"
        }
      ],
      "glosses": [
        "A form of academic conference which is run for other than academic purposes and which does not meet normal academic standards."
      ],
      "id": "en-junk_conference-en-noun-znquJ5H-",
      "links": [
        [
          "derogatory",
          "derogatory"
        ],
        [
          "academic",
          "academic"
        ]
      ],
      "raw_glosses": [
        "(countable, derogatory) A form of academic conference which is run for other than academic purposes and which does not meet normal academic standards."
      ],
      "tags": [
        "countable",
        "derogatory"
      ]
    }
  ],
  "word": "junk conference"
}

{
  "forms": [
    {
      "form": "junk conferences",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "junk conference (plural junk conferences)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English derogatory terms",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with usage examples",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "examples": [
        {
          "text": "He found a junk conference to attend so he could go somewhere warm last winter.",
          "type": "example"
        }
      ],
      "glosses": [
        "A form of academic conference which is run for other than academic purposes and which does not meet normal academic standards."
      ],
      "links": [
        [
          "derogatory",
          "derogatory"
        ],
        [
          "academic",
          "academic"
        ]
      ],
      "raw_glosses": [
        "(countable, derogatory) A form of academic conference which is run for other than academic purposes and which does not meet normal academic standards."
      ],
      "tags": [
        "countable",
        "derogatory"
      ]
    }
  ],
  "word": "junk conference"
}