"jingle brains" meaning in English

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      "expansion": "jingle brains (plural not attested)",
      "name": "en-noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "jingle-brains"
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          "kind": "other",
          "name": "English Thieves' Cant",
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      "glosses": [
        "Alternative form of jingle-brains."
      ],
      "id": "en-jingle_brains-en-noun-PHU-ZxGJ",
      "links": [
        [
          "jingle-brains",
          "jingle-brains#English"
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      "qualifier": "thieves' cant",
      "raw_glosses": [
        "(obsolete, thieves' cant) Alternative form of jingle-brains."
      ],
      "tags": [
        "alt-of",
        "alternative",
        "no-plural",
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  ],
  "word": "jingle brains"
}

{
  "head_templates": [
    {
      "args": {
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      "expansion": "jingle brains (plural not attested)",
      "name": "en-noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "jingle-brains"
        }
      ],
      "categories": [
        "English Thieves' Cant",
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English nouns with unattested plurals",
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      "glosses": [
        "Alternative form of jingle-brains."
      ],
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          "jingle-brains#English"
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      "qualifier": "thieves' cant",
      "raw_glosses": [
        "(obsolete, thieves' cant) Alternative form of jingle-brains."
      ],
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        "alt-of",
        "alternative",
        "no-plural",
        "obsolete"
      ]
    }
  ],
  "word": "jingle brains"
}