"steam navvy" meaning in English

{
  "forms": [
    {
      "form": "steam navvies",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "steam navvy (plural steam navvies)",
      "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"
        }
      ],
      "examples": [
        {
          "ref": "1940 July, “The Why and the Wherefore: Chevet Tunnel Demolition, L.M.S.R.”, in Railway Magazine, page 430",
          "text": "Three steam navvies, 350 men, 5 locomotives, and 120 wagons, were employed to remove the one and a half million tons of debris.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A steam-powered excavator used in making docks, canals, etc."
      ],
      "id": "en-steam_navvy-en-noun-sJ6GxsAc",
      "links": [
        [
          "excavator",
          "excavator"
        ]
      ],
      "raw_glosses": [
        "(historical) A steam-powered excavator used in making docks, canals, etc."
      ],
      "tags": [
        "historical"
      ]
    }
  ],
  "word": "steam navvy"
}

{
  "forms": [
    {
      "form": "steam navvies",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "steam navvy (plural steam navvies)",
      "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 historical senses",
        "English terms with quotations"
      ],
      "examples": [
        {
          "ref": "1940 July, “The Why and the Wherefore: Chevet Tunnel Demolition, L.M.S.R.”, in Railway Magazine, page 430",
          "text": "Three steam navvies, 350 men, 5 locomotives, and 120 wagons, were employed to remove the one and a half million tons of debris.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A steam-powered excavator used in making docks, canals, etc."
      ],
      "links": [
        [
          "excavator",
          "excavator"
        ]
      ],
      "raw_glosses": [
        "(historical) A steam-powered excavator used in making docks, canals, etc."
      ],
      "tags": [
        "historical"
      ]
    }
  ],
  "word": "steam navvy"
}