"0-4-0+0-4-0" meaning in English

{
  "forms": [
    {
      "form": "0-4-0+0-4-0s",
      "tags": [
        "plural"
      ]
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  "head_templates": [
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      "args": {},
      "expansion": "0-4-0+0-4-0 (plural 0-4-0+0-4-0s)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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          "kind": "other",
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          "kind": "other",
          "name": "English reduplicated coordinated pairs",
          "parents": [
            "Reduplicated coordinated pairs",
            "Coordinated pairs",
            "Reduplications",
            "Terms by etymology"
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        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Rail transportation",
          "orig": "en:Rail transportation",
          "parents": [
            "Transport",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Under the Whyte notation system, a Garratt-type locomotive that is articulated in three parts, with a boiler mounted on the centre frame, and two steam engines mounted on separate frames, one on each end of the boiler, and each having an 0-4-0 wheel configuration."
      ],
      "hypernyms": [
        {
          "word": "Garratt"
        }
      ],
      "id": "en-0-4-0+0-4-0-en-noun-6P6xlV95",
      "links": [
        [
          "Garratt",
          "Garratt"
        ],
        [
          "locomotive",
          "locomotive"
        ],
        [
          "boiler",
          "boiler"
        ],
        [
          "0-4-0",
          "0-4-0"
        ]
      ]
    }
  ],
  "word": "0-4-0+0-4-0"
}

{
  "forms": [
    {
      "form": "0-4-0+0-4-0s",
      "tags": [
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  ],
  "hypernyms": [
    {
      "word": "Garratt"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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        "English terms spelled with numbers",
        "English terms with non-redundant non-automated sortkeys",
        "English words without vowels",
        "en:Rail transportation"
      ],
      "glosses": [
        "Under the Whyte notation system, a Garratt-type locomotive that is articulated in three parts, with a boiler mounted on the centre frame, and two steam engines mounted on separate frames, one on each end of the boiler, and each having an 0-4-0 wheel configuration."
      ],
      "links": [
        [
          "Garratt",
          "Garratt"
        ],
        [
          "locomotive",
          "locomotive"
        ],
        [
          "boiler",
          "boiler"
        ],
        [
          "0-4-0",
          "0-4-0"
        ]
      ]
    }
  ],
  "word": "0-4-0+0-4-0"
}