"knock-knock joke" meaning in English

{
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        "2": "knock-knock"
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      "expansion": "knock-knock",
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      "args": {
        "1": "en",
        "2": "joke"
      },
      "expansion": "joke",
      "name": "m"
    }
  ],
  "etymology_text": "knock-knock + joke",
  "forms": [
    {
      "form": "knock-knock jokes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "knock-knock joke (plural knock-knock jokes)",
      "name": "en-noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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        {
          "kind": "topical",
          "langcode": "en",
          "name": "Comedy",
          "orig": "en:Comedy",
          "parents": [
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            "Theater",
            "Art",
            "Entertainment",
            "Culture",
            "Society",
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        }
      ],
      "examples": [
        {
          "text": "Knock knock."
        },
        {
          "text": "\"Who's there?\""
        },
        {
          "text": "(The teller of the joke says a name.)"
        },
        {
          "text": "(The person to whom the joke is being told repeats the name, followed by \"who?\")"
        },
        {
          "text": "(The teller of the joke says a pun based on the name.)"
        }
      ],
      "glosses": [
        "One of a class of childish jokes told as a dialog, and usually including a pun, in the following form:",
        "One of a class of childish jokes told as a dialog, and usually including a pun, in the following form"
      ],
      "id": "en-knock-knock_joke-en-noun-2S~Ua-~l",
      "links": [
        [
          "joke",
          "joke"
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        [
          "pun",
          "pun"
        ]
      ],
      "raw_glosses": [
        "One of a class of childish jokes told as a dialog, and usually including a pun, in the following form:"
      ],
      "synonyms": [
        {
          "word": "knock knock"
        },
        {
          "word": "knock knock joke"
        }
      ],
      "wikipedia": [
        "knock-knock joke"
      ]
    }
  ],
  "word": "knock-knock joke"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "knock-knock"
      },
      "expansion": "knock-knock",
      "name": "m"
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    {
      "args": {
        "1": "en",
        "2": "joke"
      },
      "expansion": "joke",
      "name": "m"
    }
  ],
  "etymology_text": "knock-knock + joke",
  "forms": [
    {
      "form": "knock-knock jokes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
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      "expansion": "knock-knock joke (plural knock-knock jokes)",
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  "lang_code": "en",
  "pos": "noun",
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        "en:Comedy"
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      "examples": [
        {
          "text": "Knock knock."
        },
        {
          "text": "\"Who's there?\""
        },
        {
          "text": "(The teller of the joke says a name.)"
        },
        {
          "text": "(The person to whom the joke is being told repeats the name, followed by \"who?\")"
        },
        {
          "text": "(The teller of the joke says a pun based on the name.)"
        }
      ],
      "glosses": [
        "One of a class of childish jokes told as a dialog, and usually including a pun, in the following form:",
        "One of a class of childish jokes told as a dialog, and usually including a pun, in the following form"
      ],
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        [
          "joke",
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          "pun",
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        "One of a class of childish jokes told as a dialog, and usually including a pun, in the following form:"
      ],
      "wikipedia": [
        "knock-knock joke"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "knock knock"
    },
    {
      "word": "knock knock joke"
    }
  ],
  "word": "knock-knock joke"
}