"underdeck" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "under",
        "3": "deck"
      },
      "expansion": "under- + deck",
      "name": "prefix"
    }
  ],
  "etymology_text": "under- + deck",
  "forms": [
    {
      "form": "underdecks",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "underdeck (plural underdecks)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms prefixed with under-",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "2007 August 13, Samuel I. Schwartz, “Catch Me, I’m Falling”, in New York Times",
          "text": "During my nearly 20 years as an engineer with the New York City Department of Transportation, I witnessed numerous bridge failures, including the collapse of the West Side Highway in 1973, the fatal snap of a Brooklyn Bridge cable in 1981, and the 1989 fall of a concrete slab from the underdeck of Franklin D. Roosevelt Drive, which crushed a Brooklyn dentist in his car.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "The part of a bridge that lies beneath the deck, or surface."
      ],
      "id": "en-underdeck-en-noun-lRo4~v7I",
      "links": [
        [
          "bridge",
          "bridge"
        ],
        [
          "deck",
          "deck"
        ]
      ]
    }
  ],
  "word": "underdeck"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "under",
        "3": "deck"
      },
      "expansion": "under- + deck",
      "name": "prefix"
    }
  ],
  "etymology_text": "under- + deck",
  "forms": [
    {
      "form": "underdecks",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "underdeck (plural underdecks)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English terms prefixed with under-",
        "English terms with quotations"
      ],
      "examples": [
        {
          "ref": "2007 August 13, Samuel I. Schwartz, “Catch Me, I’m Falling”, in New York Times",
          "text": "During my nearly 20 years as an engineer with the New York City Department of Transportation, I witnessed numerous bridge failures, including the collapse of the West Side Highway in 1973, the fatal snap of a Brooklyn Bridge cable in 1981, and the 1989 fall of a concrete slab from the underdeck of Franklin D. Roosevelt Drive, which crushed a Brooklyn dentist in his car.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "The part of a bridge that lies beneath the deck, or surface."
      ],
      "links": [
        [
          "bridge",
          "bridge"
        ],
        [
          "deck",
          "deck"
        ]
      ]
    }
  ],
  "word": "underdeck"
}