"camino de hierro" meaning in Spanish

{
  "etymology_templates": [
    {
      "args": {
        "1": "es",
        "2": "fr",
        "3": "chemin de fer"
      },
      "expansion": "Calque of French chemin de fer",
      "name": "calque"
    }
  ],
  "etymology_text": "Calque of French chemin de fer.",
  "forms": [
    {
      "form": "caminos de hierro",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "m"
      },
      "expansion": "camino de hierro m (plural caminos de hierro)",
      "name": "es-noun"
    }
  ],
  "hyphenation": [
    "ca‧mi‧no"
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Louisiana Spanish",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Spanish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "railroad"
      ],
      "id": "en-camino_de_hierro-es-noun-VBwFMWbf",
      "links": [
        [
          "railroad",
          "railroad"
        ]
      ],
      "raw_glosses": [
        "(Louisiana) railroad"
      ],
      "synonyms": [
        {
          "word": "ferrocarril"
        }
      ],
      "tags": [
        "Louisiana",
        "masculine"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/kaˌmino de ˈʝero/"
    },
    {
      "ipa": "[kaˌmi.no ð̞e ˈʝe.ro]"
    },
    {
      "ipa": "/kaˌmino de ˈʝero/",
      "note": "everywhere but Argentina and Uruguay"
    },
    {
      "ipa": "[kaˌmi.no ð̞e ˈʝe.ro]",
      "note": "everywhere but Argentina and Uruguay"
    },
    {
      "ipa": "/kaˌmino de ˈjero/",
      "tags": [
        "Argentina",
        "Uruguay"
      ]
    },
    {
      "ipa": "[kaˌmi.no ð̞e ˈje.ro]",
      "tags": [
        "Argentina",
        "Uruguay"
      ]
    }
  ],
  "word": "camino de hierro"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "es",
        "2": "fr",
        "3": "chemin de fer"
      },
      "expansion": "Calque of French chemin de fer",
      "name": "calque"
    }
  ],
  "etymology_text": "Calque of French chemin de fer.",
  "forms": [
    {
      "form": "caminos de hierro",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "m"
      },
      "expansion": "camino de hierro m (plural caminos de hierro)",
      "name": "es-noun"
    }
  ],
  "hyphenation": [
    "ca‧mi‧no"
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Louisiana Spanish",
        "Pages with 1 entry",
        "Pages with entries",
        "Spanish countable nouns",
        "Spanish entries with incorrect language header",
        "Spanish lemmas",
        "Spanish masculine nouns",
        "Spanish multiword terms",
        "Spanish nouns",
        "Spanish terms calqued from French",
        "Spanish terms derived from French",
        "Spanish terms with IPA pronunciation"
      ],
      "glosses": [
        "railroad"
      ],
      "links": [
        [
          "railroad",
          "railroad"
        ]
      ],
      "raw_glosses": [
        "(Louisiana) railroad"
      ],
      "synonyms": [
        {
          "word": "ferrocarril"
        }
      ],
      "tags": [
        "Louisiana",
        "masculine"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/kaˌmino de ˈʝero/"
    },
    {
      "ipa": "[kaˌmi.no ð̞e ˈʝe.ro]"
    },
    {
      "ipa": "/kaˌmino de ˈʝero/",
      "note": "everywhere but Argentina and Uruguay"
    },
    {
      "ipa": "[kaˌmi.no ð̞e ˈʝe.ro]",
      "note": "everywhere but Argentina and Uruguay"
    },
    {
      "ipa": "/kaˌmino de ˈjero/",
      "tags": [
        "Argentina",
        "Uruguay"
      ]
    },
    {
      "ipa": "[kaˌmi.no ð̞e ˈje.ro]",
      "tags": [
        "Argentina",
        "Uruguay"
      ]
    }
  ],
  "word": "camino de hierro"
}