"driving wheel" meaning in English

{
  "forms": [
    {
      "form": "driving wheels",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "driving wheel (plural driving wheels)",
      "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": "1951 March, David R. Webb, “British 4-4-2 Tank Locomotives”, in Railway Magazine, page 152",
          "text": "While not, perhaps, the handsomest of 4-4-2 tanks, as they had a rather large proportion of their driving wheels exposed, they proved very useful locomotives, doing yeoman work on suburban trains around London and Birmingham, and later on numerous rural routes.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "On a steam locomotive, a powered wheel driven by the locomotive's pistons or turbine."
      ],
      "id": "en-driving_wheel-en-noun-2sj5qsfi",
      "links": [
        [
          "rail transport",
          "rail transport"
        ],
        [
          "steam locomotive",
          "steam locomotive"
        ],
        [
          "wheel",
          "wheel"
        ],
        [
          "piston",
          "piston"
        ],
        [
          "turbine",
          "turbine"
        ]
      ],
      "raw_glosses": [
        "(rail transport) On a steam locomotive, a powered wheel driven by the locomotive's pistons or turbine."
      ],
      "related": [
        {
          "word": "driving axle"
        }
      ],
      "synonyms": [
        {
          "english": "sense 15",
          "word": "driver"
        }
      ],
      "topics": [
        "rail-transport",
        "railways",
        "transport"
      ],
      "wikipedia": [
        "driving wheel"
      ]
    }
  ],
  "word": "driving wheel"
}

{
  "forms": [
    {
      "form": "driving wheels",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "driving wheel (plural driving wheels)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "driving axle"
    }
  ],
  "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": "1951 March, David R. Webb, “British 4-4-2 Tank Locomotives”, in Railway Magazine, page 152",
          "text": "While not, perhaps, the handsomest of 4-4-2 tanks, as they had a rather large proportion of their driving wheels exposed, they proved very useful locomotives, doing yeoman work on suburban trains around London and Birmingham, and later on numerous rural routes.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "On a steam locomotive, a powered wheel driven by the locomotive's pistons or turbine."
      ],
      "links": [
        [
          "rail transport",
          "rail transport"
        ],
        [
          "steam locomotive",
          "steam locomotive"
        ],
        [
          "wheel",
          "wheel"
        ],
        [
          "piston",
          "piston"
        ],
        [
          "turbine",
          "turbine"
        ]
      ],
      "raw_glosses": [
        "(rail transport) On a steam locomotive, a powered wheel driven by the locomotive's pistons or turbine."
      ],
      "topics": [
        "rail-transport",
        "railways",
        "transport"
      ],
      "wikipedia": [
        "driving wheel"
      ]
    }
  ],
  "synonyms": [
    {
      "english": "sense 15",
      "word": "driver"
    }
  ],
  "word": "driving wheel"
}