"gritstone" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "grit",
        "3": "stone"
      },
      "expansion": "grit + stone",
      "name": "compound"
    }
  ],
  "etymology_text": "From grit + stone.",
  "forms": [
    {
      "form": "gritstones",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~"
      },
      "expansion": "gritstone (countable and uncountable, plural gritstones)",
      "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"
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          "source": "w"
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          "source": "w"
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          "parents": [],
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        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Rocks",
          "orig": "en:Rocks",
          "parents": [
            "Geology",
            "Natural materials",
            "Earth sciences",
            "Materials",
            "Nature",
            "Sciences",
            "Manufacturing",
            "All topics",
            "Human activity",
            "Fundamental",
            "Human behaviour",
            "Human"
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          "source": "w"
        }
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      "examples": [
        {
          "ref": "2020 April 8, Paul Bigland, “Rail's future revealing railway's past”, in Rail, page 38:",
          "text": "Adjacent to the roundhouse, but a little further north towards Curzon Street, are the surprising remains of the wagon turntables for the goods shed. Unusually, these are made out of solid gritstone so survive pretty much intact.",
          "type": "quote"
        }
      ],
      "glosses": [
        "A form of sedimentary rock, similar to sandstone but coarser."
      ],
      "id": "en-gritstone-en-noun-Pyn~iHoU",
      "links": [
        [
          "sedimentary",
          "sedimentary"
        ],
        [
          "rock",
          "rock"
        ],
        [
          "sandstone",
          "sandstone"
        ],
        [
          "coarse",
          "coarse"
        ]
      ],
      "tags": [
        "countable",
        "uncountable"
      ],
      "translations": [
        {
          "code": "bg",
          "lang": "Bulgarian",
          "roman": "pjasǎčnik",
          "sense": "A form of sedimentary rock",
          "tags": [
            "masculine"
          ],
          "word": "пясъчник"
        }
      ]
    }
  ],
  "word": "gritstone"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "grit",
        "3": "stone"
      },
      "expansion": "grit + stone",
      "name": "compound"
    }
  ],
  "etymology_text": "From grit + stone.",
  "forms": [
    {
      "form": "gritstones",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~"
      },
      "expansion": "gritstone (countable and uncountable, plural gritstones)",
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  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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        "English countable nouns",
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      "examples": [
        {
          "ref": "2020 April 8, Paul Bigland, “Rail's future revealing railway's past”, in Rail, page 38:",
          "text": "Adjacent to the roundhouse, but a little further north towards Curzon Street, are the surprising remains of the wagon turntables for the goods shed. Unusually, these are made out of solid gritstone so survive pretty much intact.",
          "type": "quote"
        }
      ],
      "glosses": [
        "A form of sedimentary rock, similar to sandstone but coarser."
      ],
      "links": [
        [
          "sedimentary",
          "sedimentary"
        ],
        [
          "rock",
          "rock"
        ],
        [
          "sandstone",
          "sandstone"
        ],
        [
          "coarse",
          "coarse"
        ]
      ],
      "tags": [
        "countable",
        "uncountable"
      ]
    }
  ],
  "translations": [
    {
      "code": "bg",
      "lang": "Bulgarian",
      "roman": "pjasǎčnik",
      "sense": "A form of sedimentary rock",
      "tags": [
        "masculine"
      ],
      "word": "пясъчник"
    }
  ],
  "word": "gritstone"
}