"marlstone" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "marl",
        "3": "stone"
      },
      "expansion": "marl + stone",
      "name": "compound"
    }
  ],
  "etymology_text": "marl + stone",
  "forms": [
    {
      "form": "marlstones",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~"
      },
      "expansion": "marlstone (countable and uncountable, plural marlstones)",
      "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": "Geology",
          "orig": "en:Geology",
          "parents": [
            "Earth sciences",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1961 July, C. P. Walker, P. H. V. Banyard, “Leicester's Belgrave Road branch lives another year”, in Trains Illustrated, page 414",
          "text": "The steady climb eastwards has lifted us from the Soar Valley at Leicester into the marlstone (or ironstone) country of the Middle Lias which, at this point, forms a ridge of high ground over 700ft above sea level, […]",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Marl when hardened into stone."
      ],
      "id": "en-marlstone-en-noun-BIe6Vcl2",
      "links": [
        [
          "geology",
          "geology"
        ],
        [
          "Marl",
          "marl"
        ],
        [
          "stone",
          "stone"
        ]
      ],
      "raw_glosses": [
        "(geology) Marl when hardened into stone."
      ],
      "tags": [
        "countable",
        "uncountable"
      ],
      "topics": [
        "geography",
        "geology",
        "natural-sciences"
      ],
      "translations": [
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "hardened marl",
          "word": "merkelikivi"
        }
      ]
    }
  ],
  "word": "marlstone"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "marl",
        "3": "stone"
      },
      "expansion": "marl + stone",
      "name": "compound"
    }
  ],
  "etymology_text": "marl + stone",
  "forms": [
    {
      "form": "marlstones",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~"
      },
      "expansion": "marlstone (countable and uncountable, plural marlstones)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English compound terms",
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English terms with quotations",
        "English uncountable nouns",
        "en:Geology"
      ],
      "examples": [
        {
          "ref": "1961 July, C. P. Walker, P. H. V. Banyard, “Leicester's Belgrave Road branch lives another year”, in Trains Illustrated, page 414",
          "text": "The steady climb eastwards has lifted us from the Soar Valley at Leicester into the marlstone (or ironstone) country of the Middle Lias which, at this point, forms a ridge of high ground over 700ft above sea level, […]",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Marl when hardened into stone."
      ],
      "links": [
        [
          "geology",
          "geology"
        ],
        [
          "Marl",
          "marl"
        ],
        [
          "stone",
          "stone"
        ]
      ],
      "raw_glosses": [
        "(geology) Marl when hardened into stone."
      ],
      "tags": [
        "countable",
        "uncountable"
      ],
      "topics": [
        "geography",
        "geology",
        "natural-sciences"
      ]
    }
  ],
  "translations": [
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "hardened marl",
      "word": "merkelikivi"
    }
  ],
  "word": "marlstone"
}