"railjoint" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "rail",
        "3": "joint"
      },
      "expansion": "rail + joint",
      "name": "af"
    }
  ],
  "etymology_text": "From rail + joint.",
  "forms": [
    {
      "form": "railjoints",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "railjoint (plural railjoints)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "rail joint"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1960 March, G. Freeman Allen, “Europe's most luxurious express - the \"Settebello\"”, in Trains Illustrated, page 141",
          "text": "Apart from a vague rushing noise outside the windows and the very muffled beat of the wheels on railjoints, one might have been sitting in an intimate private lounge in a four-star hotel.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Alternative form of rail joint"
      ],
      "id": "en-railjoint-en-noun-z8Qp3SQI",
      "links": [
        [
          "rail joint",
          "rail joint#English"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative"
      ]
    }
  ],
  "word": "railjoint"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "rail",
        "3": "joint"
      },
      "expansion": "rail + joint",
      "name": "af"
    }
  ],
  "etymology_text": "From rail + joint.",
  "forms": [
    {
      "form": "railjoints",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "railjoint (plural railjoints)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "rail joint"
        }
      ],
      "categories": [
        "English compound terms",
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English terms with quotations"
      ],
      "examples": [
        {
          "ref": "1960 March, G. Freeman Allen, “Europe's most luxurious express - the \"Settebello\"”, in Trains Illustrated, page 141",
          "text": "Apart from a vague rushing noise outside the windows and the very muffled beat of the wheels on railjoints, one might have been sitting in an intimate private lounge in a four-star hotel.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Alternative form of rail joint"
      ],
      "links": [
        [
          "rail joint",
          "rail joint#English"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative"
      ]
    }
  ],
  "word": "railjoint"
}