"pumice raft" meaning in English

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  "forms": [
    {
      "form": "pumice rafts",
      "tags": [
        "plural"
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      "expansion": "pumice raft (plural pumice rafts)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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      "glosses": [
        "A collection of pumice stones that form a floating island of rock and sand, as pumice is less dense than water."
      ],
      "id": "en-pumice_raft-en-noun-S0upaww2"
    }
  ],
  "word": "pumice raft"
}

{
  "forms": [
    {
      "form": "pumice rafts",
      "tags": [
        "plural"
      ]
    }
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      "expansion": "pumice raft (plural pumice rafts)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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      "glosses": [
        "A collection of pumice stones that form a floating island of rock and sand, as pumice is less dense than water."
      ]
    }
  ],
  "word": "pumice raft"
}