"clinker block" meaning in English

{
  "forms": [
    {
      "form": "clinker blocks",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "clinker block (plural clinker blocks)",
      "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": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Building materials",
          "orig": "en:Building materials",
          "parents": [
            "Construction",
            "Materials",
            "Architecture",
            "Engineering",
            "Manufacturing",
            "Applied sciences",
            "Art",
            "Technology",
            "Human activity",
            "Sciences",
            "Culture",
            "All topics",
            "Human behaviour",
            "Society",
            "Fundamental",
            "Human"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A lightweight building block made from cinders and concrete."
      ],
      "id": "en-clinker_block-en-noun-mPOMMFDr",
      "links": [
        [
          "cinders",
          "cinder"
        ],
        [
          "concrete",
          "concrete"
        ]
      ],
      "synonyms": [
        {
          "word": "breeze-block"
        },
        {
          "word": "cinder block"
        },
        {
          "word": "hollow block"
        }
      ]
    }
  ],
  "word": "clinker block"
}

{
  "forms": [
    {
      "form": "clinker blocks",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "clinker block (plural clinker blocks)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Building materials"
      ],
      "glosses": [
        "A lightweight building block made from cinders and concrete."
      ],
      "links": [
        [
          "cinders",
          "cinder"
        ],
        [
          "concrete",
          "concrete"
        ]
      ]
    }
  ],
  "synonyms": [
    {
      "word": "breeze-block"
    },
    {
      "word": "cinder block"
    },
    {
      "word": "hollow block"
    }
  ],
  "word": "clinker block"
}