"block train" meaning in English

{
  "forms": [
    {
      "form": "block trains",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "block train (plural block trains)",
      "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": "Rail transportation",
          "orig": "en:Rail transportation",
          "parents": [
            "Transport",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1964 March, “News and Comment: More block trains in South Wales”, in Modern Railways, page 152",
          "text": "Steel billet traffic in block trains from Briton Ferry to Langley Green has developed from an initial service of one train three times a week [...]. In addition, plans are now being formulated for the operation of numerous block trains formed exclusively of the new 32.4-ton BR brake-fitted hopper wagons, permanently coupled, from South Wales collieries to Swansea Docks, [...].",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A freight train that carries only one commodity."
      ],
      "id": "en-block_train-en-noun-i7QH7xcW",
      "links": [
        [
          "rail transport",
          "rail transport"
        ],
        [
          "freight train",
          "freight train"
        ],
        [
          "commodity",
          "commodity"
        ]
      ],
      "raw_glosses": [
        "(rail transport) A freight train that carries only one commodity."
      ],
      "topics": [
        "rail-transport",
        "railways",
        "transport"
      ]
    }
  ],
  "word": "block train"
}

{
  "forms": [
    {
      "form": "block trains",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "block train (plural block trains)",
      "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",
        "English terms with quotations",
        "en:Rail transportation"
      ],
      "examples": [
        {
          "ref": "1964 March, “News and Comment: More block trains in South Wales”, in Modern Railways, page 152",
          "text": "Steel billet traffic in block trains from Briton Ferry to Langley Green has developed from an initial service of one train three times a week [...]. In addition, plans are now being formulated for the operation of numerous block trains formed exclusively of the new 32.4-ton BR brake-fitted hopper wagons, permanently coupled, from South Wales collieries to Swansea Docks, [...].",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A freight train that carries only one commodity."
      ],
      "links": [
        [
          "rail transport",
          "rail transport"
        ],
        [
          "freight train",
          "freight train"
        ],
        [
          "commodity",
          "commodity"
        ]
      ],
      "raw_glosses": [
        "(rail transport) A freight train that carries only one commodity."
      ],
      "topics": [
        "rail-transport",
        "railways",
        "transport"
      ]
    }
  ],
  "word": "block train"
}