"thumbless wave" meaning in English

{
  "forms": [
    {
      "form": "thumbless waves",
      "tags": [
        "plural"
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  "head_templates": [
    {
      "args": {},
      "expansion": "thumbless wave (plural thumbless waves)",
      "name": "en-noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
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          "source": "w"
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      "glosses": [
        "A hand gesture used to indicate contrition. The hand is held up with the palm facing outward, thumb placed across the palm, and the fingers extended upward. Ex: \"After mistakenly cutting someone off in traffic, the driver showed his remorse by giving the thumbless wave.\""
      ],
      "id": "en-thumbless_wave-en-noun-6rDpFZX4"
    }
  ],
  "word": "thumbless wave"
}

{
  "forms": [
    {
      "form": "thumbless waves",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "thumbless wave (plural thumbless waves)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
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        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "Pages with 1 entry",
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      ],
      "glosses": [
        "A hand gesture used to indicate contrition. The hand is held up with the palm facing outward, thumb placed across the palm, and the fingers extended upward. Ex: \"After mistakenly cutting someone off in traffic, the driver showed his remorse by giving the thumbless wave.\""
      ]
    }
  ],
  "word": "thumbless wave"
}