"cadr" meaning in English

{
  "etymology_text": "Contraction of car of the cdr.",
  "forms": [
    {
      "form": "cadrs",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "cadr (plural cadrs)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 2 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "langcode": "en",
          "name": "Programming",
          "orig": "en:Programming",
          "parents": [],
          "source": "w"
        },
        {
          "_dis": "96 3 1",
          "kind": "other",
          "name": "Pages with 2 entries",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "96 3 1",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "derived": [
        {
          "word": "caddr"
        }
      ],
      "examples": [
        {
          "bold_text_offsets": [
            [
              88,
              92
            ]
          ],
          "ref": "2000, Matt Kaufmann, Panagiotis Manolios, J. Strother Moore, Computer-Aided Reasoning: An Approach:",
          "text": "If we let x denote the tree (1 2 3), then the car of x is 1, the cdr of x is (2 3), the cadr of x is 2, the caddr of x is 3, and the cdddr of x is nil.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Car of the cdr in Lisp. The second element in a list."
      ],
      "id": "en-cadr-en-noun-dMJVQaA9",
      "links": [
        [
          "programming",
          "programming#Noun"
        ],
        [
          "Car",
          "car"
        ],
        [
          "cdr",
          "cdr"
        ],
        [
          "Lisp",
          "Lisp"
        ]
      ],
      "raw_glosses": [
        "(programming) Car of the cdr in Lisp. The second element in a list."
      ],
      "topics": [
        "computing",
        "engineering",
        "mathematics",
        "natural-sciences",
        "physical-sciences",
        "programming",
        "sciences"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈkɑːdə/"
    },
    {
      "ipa": "/ˈkɑdɚ/"
    },
    {
      "ipa": "/ˈkeɪdə/"
    },
    {
      "ipa": "/ˈkeɪdɚ/"
    },
    {
      "audio": "en-us-cadr.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/e/e9/En-us-cadr.ogg/En-us-cadr.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/e/e9/En-us-cadr.ogg"
    }
  ],
  "word": "cadr"
}

{
  "categories": [
    "Pages with 2 entries",
    "Pages with entries"
  ],
  "derived": [
    {
      "word": "caddr"
    }
  ],
  "etymology_text": "Contraction of car of the cdr.",
  "forms": [
    {
      "form": "cadrs",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "cadr (plural cadrs)",
      "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 with quotations",
        "Pages with 2 entries",
        "Pages with entries",
        "Quotation templates to be cleaned",
        "en:Programming"
      ],
      "examples": [
        {
          "bold_text_offsets": [
            [
              88,
              92
            ]
          ],
          "ref": "2000, Matt Kaufmann, Panagiotis Manolios, J. Strother Moore, Computer-Aided Reasoning: An Approach:",
          "text": "If we let x denote the tree (1 2 3), then the car of x is 1, the cdr of x is (2 3), the cadr of x is 2, the caddr of x is 3, and the cdddr of x is nil.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Car of the cdr in Lisp. The second element in a list."
      ],
      "links": [
        [
          "programming",
          "programming#Noun"
        ],
        [
          "Car",
          "car"
        ],
        [
          "cdr",
          "cdr"
        ],
        [
          "Lisp",
          "Lisp"
        ]
      ],
      "raw_glosses": [
        "(programming) Car of the cdr in Lisp. The second element in a list."
      ],
      "topics": [
        "computing",
        "engineering",
        "mathematics",
        "natural-sciences",
        "physical-sciences",
        "programming",
        "sciences"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈkɑːdə/"
    },
    {
      "ipa": "/ˈkɑdɚ/"
    },
    {
      "ipa": "/ˈkeɪdə/"
    },
    {
      "ipa": "/ˈkeɪdɚ/"
    },
    {
      "audio": "en-us-cadr.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/e/e9/En-us-cadr.ogg/En-us-cadr.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/e/e9/En-us-cadr.ogg"
    }
  ],
  "word": "cadr"
}