"Peter Pan generation" meaning in English

{
  "etymology_text": "Coined by American sociologist Kathleen Shaputis, because of the members' perceived tendency for delaying some rites of passage into adulthood.",
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  "lang": "English",
  "lang_code": "en",
  "pos": "name",
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          "name": "English entries with incorrect language header",
          "parents": [
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            "Entry maintenance"
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        {
          "kind": "topical",
          "langcode": "en",
          "name": "Millennials",
          "orig": "en:Millennials",
          "parents": [
            "Generations",
            "Age",
            "Collectives",
            "Demography",
            "People",
            "Sociology",
            "Human",
            "Time",
            "Miscellaneous",
            "Sciences",
            "Statistics",
            "Social sciences",
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            "Formal sciences",
            "Mathematics",
            "Society",
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      ],
      "glosses": [
        "Generation Y"
      ],
      "id": "en-Peter_Pan_generation-en-name-2tmdg03X",
      "links": [
        [
          "Generation Y",
          "Generation Y"
        ]
      ]
    }
  ],
  "word": "Peter Pan generation"
}

{
  "etymology_text": "Coined by American sociologist Kathleen Shaputis, because of the members' perceived tendency for delaying some rites of passage into adulthood.",
  "head_templates": [
    {
      "args": {
        "head": "Peter Pan generation"
      },
      "expansion": "Peter Pan generation",
      "name": "en-proper noun"
    }
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  "lang": "English",
  "lang_code": "en",
  "pos": "name",
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        "English entries with incorrect language header",
        "English eponyms",
        "English lemmas",
        "English multiword terms",
        "English proper nouns",
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        "en:Millennials"
      ],
      "glosses": [
        "Generation Y"
      ],
      "links": [
        [
          "Generation Y",
          "Generation Y"
        ]
      ]
    }
  ],
  "word": "Peter Pan generation"
}