"frustule" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "la",
        "3": "frustulum"
      },
      "expansion": "Latin frustulum",
      "name": "bor"
    }
  ],
  "etymology_text": "Borrowed from Latin frustulum, from frustum (“morsel”).",
  "forms": [
    {
      "form": "frustules",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "frustule (plural frustules)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Botany",
          "orig": "en:Botany",
          "parents": [
            "Biology",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "The siliceous shell of a diatom."
      ],
      "id": "en-frustule-en-noun-4Kj3iYHw",
      "links": [
        [
          "botany",
          "botany"
        ],
        [
          "siliceous",
          "siliceous"
        ],
        [
          "diatom",
          "diatom"
        ]
      ],
      "raw_glosses": [
        "(botany) The siliceous shell of a diatom."
      ],
      "related": [
        {
          "word": "frustum"
        }
      ],
      "topics": [
        "biology",
        "botany",
        "natural-sciences"
      ],
      "wikipedia": [
        "frustule"
      ]
    }
  ],
  "word": "frustule"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "la",
        "3": "frustulum"
      },
      "expansion": "Latin frustulum",
      "name": "bor"
    }
  ],
  "etymology_text": "Borrowed from Latin frustulum, from frustum (“morsel”).",
  "forms": [
    {
      "form": "frustules",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "frustule (plural frustules)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "frustum"
    }
  ],
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English terms borrowed from Latin",
        "English terms derived from Latin",
        "en:Botany"
      ],
      "glosses": [
        "The siliceous shell of a diatom."
      ],
      "links": [
        [
          "botany",
          "botany"
        ],
        [
          "siliceous",
          "siliceous"
        ],
        [
          "diatom",
          "diatom"
        ]
      ],
      "raw_glosses": [
        "(botany) The siliceous shell of a diatom."
      ],
      "topics": [
        "biology",
        "botany",
        "natural-sciences"
      ],
      "wikipedia": [
        "frustule"
      ]
    }
  ],
  "word": "frustule"
}