"milk train" meaning in English

{
  "etymology_text": "Familiarised from the early morning goods trains used to transport milk on the British railway system.",
  "forms": [
    {
      "form": "milk trains",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "milk train (plural milk trains)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "British English",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "2012, Pete Townshend, Who I Am, HarperCollins, →ISBN, page 245:",
          "text": "But I also felt again the remembered romantic warmth of nodding off on the milk-train home in the early hours, with Liz by my side.",
          "type": "quote"
        }
      ],
      "glosses": [
        "A slow passenger train leaving in the early hours of the morning."
      ],
      "id": "en-milk_train-en-noun-cBfzLeBN",
      "links": [
        [
          "passenger",
          "passenger"
        ],
        [
          "train",
          "train"
        ]
      ],
      "raw_glosses": [
        "(UK, colloquial) A slow passenger train leaving in the early hours of the morning."
      ],
      "tags": [
        "UK",
        "colloquial"
      ]
    },
    {
      "categories": [
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Rail transportation",
          "orig": "en:Rail transportation",
          "parents": [
            "Transport",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "_dis": "29 71",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "28 72",
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "25 75",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "examples": [
        {
          "ref": "1959 March, R. C. Riley, “Home with the Milk”, in Trains Illustrated, page 154:",
          "text": "On the Western Region, milk trains work up to London from Penzance, Wellington (Som.), Weymouth, Whitland, Carmarthen and Wootton Bassett, each train making several intermediate stops to attach further milk tanks, and in some cases to shed them.",
          "type": "quote"
        }
      ],
      "glosses": [
        "A goods train that carried milk, usually in tank wagons."
      ],
      "id": "en-milk_train-en-noun-Hm~xdwBu",
      "links": [
        [
          "rail transport",
          "rail transport"
        ],
        [
          "goods train",
          "goods train"
        ],
        [
          "tank wagon",
          "tank wagon"
        ]
      ],
      "raw_glosses": [
        "(rail transport) A goods train that carried milk, usually in tank wagons."
      ],
      "topics": [
        "rail-transport",
        "railways",
        "transport"
      ]
    }
  ],
  "word": "milk train"
}

{
  "categories": [
    "English countable nouns",
    "English entries with incorrect language header",
    "English lemmas",
    "English multiword terms",
    "English nouns",
    "Pages with 1 entry",
    "Pages with entries"
  ],
  "etymology_text": "Familiarised from the early morning goods trains used to transport milk on the British railway system.",
  "forms": [
    {
      "form": "milk trains",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "milk train (plural milk trains)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "British English",
        "English colloquialisms",
        "English terms with quotations"
      ],
      "examples": [
        {
          "ref": "2012, Pete Townshend, Who I Am, HarperCollins, →ISBN, page 245:",
          "text": "But I also felt again the remembered romantic warmth of nodding off on the milk-train home in the early hours, with Liz by my side.",
          "type": "quote"
        }
      ],
      "glosses": [
        "A slow passenger train leaving in the early hours of the morning."
      ],
      "links": [
        [
          "passenger",
          "passenger"
        ],
        [
          "train",
          "train"
        ]
      ],
      "raw_glosses": [
        "(UK, colloquial) A slow passenger train leaving in the early hours of the morning."
      ],
      "tags": [
        "UK",
        "colloquial"
      ]
    },
    {
      "categories": [
        "English terms with quotations",
        "en:Rail transportation"
      ],
      "examples": [
        {
          "ref": "1959 March, R. C. Riley, “Home with the Milk”, in Trains Illustrated, page 154:",
          "text": "On the Western Region, milk trains work up to London from Penzance, Wellington (Som.), Weymouth, Whitland, Carmarthen and Wootton Bassett, each train making several intermediate stops to attach further milk tanks, and in some cases to shed them.",
          "type": "quote"
        }
      ],
      "glosses": [
        "A goods train that carried milk, usually in tank wagons."
      ],
      "links": [
        [
          "rail transport",
          "rail transport"
        ],
        [
          "goods train",
          "goods train"
        ],
        [
          "tank wagon",
          "tank wagon"
        ]
      ],
      "raw_glosses": [
        "(rail transport) A goods train that carried milk, usually in tank wagons."
      ],
      "topics": [
        "rail-transport",
        "railways",
        "transport"
      ]
    }
  ],
  "word": "milk train"
}