"coal drop" meaning in English

{
  "forms": [
    {
      "form": "coal drops",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "coal drop (plural coal drops)",
      "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": "Coal",
          "orig": "en:Coal",
          "parents": [
            "Fossil fuels",
            "Carbon",
            "Energy",
            "Natural resources",
            "Carbon group elements",
            "Nature",
            "Matter",
            "Chemical elements",
            "All topics",
            "Chemistry",
            "Fundamental",
            "Sciences"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Rail transportation",
          "orig": "en:Rail transportation",
          "parents": [
            "Transport",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1948 January and February, “Notes and News: Duke of Wellington's Early Railway Journey”, in Railway Magazine, page 56",
          "text": "The ladies remained at the house, while the men walked to the staith on the [River] Wear, and were shown the process of unloading the wagons into the keels by means of the coal-drop.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "An elevated railway track designed to allow material to fall freely between the rails onto the ground beneath. It is used to rapidly unload hoppers containing coal and other bulk materials."
      ],
      "id": "en-coal_drop-en-noun-eI7nko4V",
      "synonyms": [
        {
          "word": "staithe"
        }
      ]
    }
  ],
  "word": "coal drop"
}

{
  "forms": [
    {
      "form": "coal drops",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "coal drop (plural coal drops)",
      "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:Coal",
        "en:Rail transportation"
      ],
      "examples": [
        {
          "ref": "1948 January and February, “Notes and News: Duke of Wellington's Early Railway Journey”, in Railway Magazine, page 56",
          "text": "The ladies remained at the house, while the men walked to the staith on the [River] Wear, and were shown the process of unloading the wagons into the keels by means of the coal-drop.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "An elevated railway track designed to allow material to fall freely between the rails onto the ground beneath. It is used to rapidly unload hoppers containing coal and other bulk materials."
      ]
    }
  ],
  "synonyms": [
    {
      "word": "staithe"
    }
  ],
  "word": "coal drop"
}