"railroad crossing" meaning in English

{
  "forms": [
    {
      "form": "railroad crossings",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "railroad crossing (plural railroad crossings)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "American English",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Rail transportation",
          "orig": "en:Rail transportation",
          "parents": [
            "Transport",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Roads",
          "orig": "en:Roads",
          "parents": [
            "Road transport",
            "Transport",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "An area on a road where a train crosses."
      ],
      "id": "en-railroad_crossing-en-noun-Vq2~9W3k",
      "raw_glosses": [
        "(US) An area on a road where a train crosses."
      ],
      "synonyms": [
        {
          "word": "level crossing"
        },
        {
          "word": "grade crossing"
        }
      ],
      "tags": [
        "US"
      ]
    }
  ],
  "word": "railroad crossing"
}

{
  "forms": [
    {
      "form": "railroad crossings",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "railroad crossing (plural railroad crossings)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "American English",
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Rail transportation",
        "en:Roads"
      ],
      "glosses": [
        "An area on a road where a train crosses."
      ],
      "raw_glosses": [
        "(US) An area on a road where a train crosses."
      ],
      "tags": [
        "US"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "level crossing"
    },
    {
      "word": "grade crossing"
    }
  ],
  "word": "railroad crossing"
}