"bipyramidal" meaning in English

{
  "etymology_templates": [
    {
      "args": {
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        "2": "bi",
        "3": "pyramidal"
      },
      "expansion": "bi- + pyramidal",
      "name": "prefix"
    }
  ],
  "etymology_text": "From bi- + pyramidal.",
  "head_templates": [
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      "expansion": "bipyramidal (not comparable)",
      "name": "en-adj"
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  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
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        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
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          "source": "w"
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          "parents": [],
          "source": "w"
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          "name": "English terms prefixed with bi-",
          "parents": [],
          "source": "w"
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          "source": "w"
        },
        {
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      ],
      "glosses": [
        "Having the shape of a bipyramid"
      ],
      "id": "en-bipyramidal-en-adj-qlt9n7zJ",
      "links": [
        [
          "bipyramid",
          "bipyramid"
        ]
      ],
      "tags": [
        "not-comparable"
      ]
    }
  ],
  "word": "bipyramidal"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "bi",
        "3": "pyramidal"
      },
      "expansion": "bi- + pyramidal",
      "name": "prefix"
    }
  ],
  "etymology_text": "From bi- + pyramidal.",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "bipyramidal (not comparable)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        "English adjectives",
        "English entries with incorrect language header",
        "English hybridisms",
        "English lemmas",
        "English terms prefixed with bi-",
        "English uncomparable adjectives",
        "Pages with 2 entries",
        "Pages with entries"
      ],
      "glosses": [
        "Having the shape of a bipyramid"
      ],
      "links": [
        [
          "bipyramid",
          "bipyramid"
        ]
      ],
      "tags": [
        "not-comparable"
      ]
    }
  ],
  "word": "bipyramidal"
}