"formstone" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "form",
        "3": "stone"
      },
      "expansion": "form + stone",
      "name": "compound"
    }
  ],
  "etymology_text": "From form + stone.",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "formstone (uncountable)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
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          "parents": [],
          "source": "w"
        }
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      "examples": [
        {
          "bold_text_offsets": [
            [
              127,
              136
            ]
          ],
          "ref": "1985, Anne Tyler, The Accidental Tourist, Knopf, →ISBN, page 199:",
          "text": "He turned into Singleton and found a block of row houses that gave a sense of having been skimped on. […] Most were covered in formstone, but the bricks of Number 16 had been painted a rubbery maroon.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A plaster compound creating the trompe l'oeil appearance of rock."
      ],
      "id": "en-formstone-en-noun-s2a7MFgd",
      "links": [
        [
          "plaster",
          "plaster"
        ],
        [
          "compound",
          "compound"
        ],
        [
          "trompe l'oeil",
          "trompe l'oeil"
        ],
        [
          "rock",
          "rock"
        ]
      ],
      "tags": [
        "uncountable"
      ]
    }
  ],
  "word": "formstone"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "form",
        "3": "stone"
      },
      "expansion": "form + stone",
      "name": "compound"
    }
  ],
  "etymology_text": "From form + stone.",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "formstone (uncountable)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English compound terms",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English terms with quotations",
        "English uncountable nouns",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "examples": [
        {
          "bold_text_offsets": [
            [
              127,
              136
            ]
          ],
          "ref": "1985, Anne Tyler, The Accidental Tourist, Knopf, →ISBN, page 199:",
          "text": "He turned into Singleton and found a block of row houses that gave a sense of having been skimped on. […] Most were covered in formstone, but the bricks of Number 16 had been painted a rubbery maroon.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A plaster compound creating the trompe l'oeil appearance of rock."
      ],
      "links": [
        [
          "plaster",
          "plaster"
        ],
        [
          "compound",
          "compound"
        ],
        [
          "trompe l'oeil",
          "trompe l'oeil"
        ],
        [
          "rock",
          "rock"
        ]
      ],
      "tags": [
        "uncountable"
      ]
    }
  ],
  "word": "formstone"
}