"underpass" meaning in English

{
  "categories": [
    {
      "kind": "other",
      "name": "Terms prefixed with under-",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "under",
        "2": "pass"
      },
      "expansion": "under- + pass",
      "name": "ety-prefix"
    }
  ],
  "etymology_text": "under- + pass",
  "forms": [
    {
      "form": "underpass",
      "tags": [
        "singular"
      ]
    },
    {
      "form": "underpasses",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "2": "underpasses"
      },
      "expansion": "[POS TABLE]",
      "name": "noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "antonyms": [
        {
          "word": "overpass"
        }
      ],
      "categories": [],
      "glosses": [
        "An underpass is a passage that crosses a road, railroad or similar obstacle in a tunnel underneath it."
      ],
      "id": "simple-underpass-en-noun-4VBqy4Ot",
      "raw_tags": [
        "countable"
      ]
    }
  ],
  "word": "underpass"
}

{
  "categories": [
    "Terms prefixed with under-"
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "under",
        "2": "pass"
      },
      "expansion": "under- + pass",
      "name": "ety-prefix"
    }
  ],
  "etymology_text": "under- + pass",
  "forms": [
    {
      "form": "underpass",
      "tags": [
        "singular"
      ]
    },
    {
      "form": "underpasses",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "2": "underpasses"
      },
      "expansion": "[POS TABLE]",
      "name": "noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "antonyms": [
        {
          "word": "overpass"
        }
      ],
      "categories": [
        "Countable nouns"
      ],
      "glosses": [
        "An underpass is a passage that crosses a road, railroad or similar obstacle in a tunnel underneath it."
      ],
      "raw_tags": [
        "countable"
      ]
    }
  ],
  "word": "underpass"
}