"moorstone" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "moor",
        "3": "stone"
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      "expansion": "moor + stone",
      "name": "compound"
    }
  ],
  "etymology_text": "From moor + stone.",
  "forms": [
    {
      "form": "moorstones",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
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      "args": {
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      "expansion": "moorstone (countable and uncountable, plural moorstones)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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          "name": "English entries with incorrect language header",
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      "examples": [
        {
          "ref": "1792, James Boswell, in Danziger & Brady (eds.), Boswell: The Great Biographer (Journals 1789–1795), Yale 1989, p. 176",
          "text": "Most of them are what is called moorstone, a kind of granite, but which is so damp that it must, when built in the wall of a house, be lined with brick or other stone."
        }
      ],
      "glosses": [
        "A type of English granite, found mostly in Cornwall."
      ],
      "id": "en-moorstone-en-noun-IaKHSBkG",
      "links": [
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        [
          "granite",
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      "tags": [
        "countable",
        "uncountable"
      ]
    }
  ],
  "word": "moorstone"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "moor",
        "3": "stone"
      },
      "expansion": "moor + stone",
      "name": "compound"
    }
  ],
  "etymology_text": "From moor + stone.",
  "forms": [
    {
      "form": "moorstones",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~"
      },
      "expansion": "moorstone (countable and uncountable, plural moorstones)",
      "name": "en-noun"
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  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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          "ref": "1792, James Boswell, in Danziger & Brady (eds.), Boswell: The Great Biographer (Journals 1789–1795), Yale 1989, p. 176",
          "text": "Most of them are what is called moorstone, a kind of granite, but which is so damp that it must, when built in the wall of a house, be lined with brick or other stone."
        }
      ],
      "glosses": [
        "A type of English granite, found mostly in Cornwall."
      ],
      "links": [
        [
          "English",
          "English"
        ],
        [
          "granite",
          "granite"
        ]
      ],
      "tags": [
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      ]
    }
  ],
  "word": "moorstone"
}