"sea shell" meaning in English

{
  "forms": [
    {
      "form": "sea shells",
      "tags": [
        "plural"
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  "head_templates": [
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      "expansion": "sea shell (plural sea shells)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "seashell"
        }
      ],
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          "source": "w"
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      "examples": [
        {
          "ref": "2013, Hans Meinhardt, The Algorithmic Beauty of Sea Shells, Springer Science & Business Media, →ISBN, page 204:",
          "text": "At first glance, this process seems to have nothing in common with any of the patterns on sea shells, but this impression is misleading.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Alternative form of seashell"
      ],
      "id": "en-sea_shell-en-noun-7~fpiR4E",
      "links": [
        [
          "seashell",
          "seashell#English"
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      ],
      "tags": [
        "alt-of",
        "alternative"
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    }
  ],
  "word": "sea shell"
}

{
  "forms": [
    {
      "form": "sea shells",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "sea shell (plural sea shells)",
      "name": "en-noun"
    }
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "seashell"
        }
      ],
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
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      "examples": [
        {
          "ref": "2013, Hans Meinhardt, The Algorithmic Beauty of Sea Shells, Springer Science & Business Media, →ISBN, page 204:",
          "text": "At first glance, this process seems to have nothing in common with any of the patterns on sea shells, but this impression is misleading.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Alternative form of seashell"
      ],
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          "seashell#English"
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  ],
  "word": "sea shell"
}