"knock-knock" meaning in English

{
  "etymology_text": "Onomatopoeic.",
  "head_templates": [
    {
      "args": {},
      "expansion": "knock-knock",
      "name": "en-interj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "intj",
  "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 entries with language name categories using raw markup",
          "parents": [
            "Entries with language name categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English onomatopoeias",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms with non-redundant non-automated sortkeys",
          "parents": [
            "Terms with non-redundant non-automated sortkeys",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms with redundant script codes",
          "parents": [
            "Terms with redundant script codes",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "a verbal emulation of a knocking sound"
      ],
      "id": "en-knock-knock-en-intj-gj2Hk6Cf",
      "links": [
        [
          "verbal",
          "verbal"
        ],
        [
          "emulation",
          "emulation"
        ],
        [
          "knocking",
          "knocking"
        ],
        [
          "sound",
          "sound"
        ]
      ],
      "translations": [
        {
          "code": "cmn",
          "lang": "Chinese Mandarin",
          "roman": "kēke, kàikài",
          "sense": "verbal knocking sound",
          "word": "磕磕"
        },
        {
          "code": "nl",
          "lang": "Dutch",
          "sense": "verbal knocking sound",
          "word": "klop klop"
        },
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "verbal knocking sound",
          "word": "kop kop"
        },
        {
          "code": "fr",
          "lang": "French",
          "sense": "verbal knocking sound",
          "word": "toc-toc"
        },
        {
          "code": "de",
          "lang": "German",
          "sense": "verbal knocking sound",
          "word": "klopf klopf"
        },
        {
          "code": "he",
          "lang": "Hebrew",
          "roman": "tuk tuk",
          "sense": "verbal knocking sound",
          "word": "טוק טוק"
        },
        {
          "code": "id",
          "lang": "Indonesian",
          "sense": "verbal knocking sound",
          "word": "woi woi"
        },
        {
          "code": "ja",
          "lang": "Japanese",
          "roman": "nokkunokku",
          "sense": "verbal knocking sound",
          "word": "ノックノック"
        },
        {
          "code": "ko",
          "lang": "Korean",
          "roman": "ttokttok",
          "sense": "verbal knocking sound",
          "word": "똑똑"
        },
        {
          "code": "ko",
          "lang": "Korean",
          "roman": "nokeunokeu",
          "sense": "verbal knocking sound",
          "word": "노크노크"
        },
        {
          "code": "pl",
          "lang": "Polish",
          "sense": "verbal knocking sound",
          "word": "puk-puk"
        },
        {
          "code": "ru",
          "lang": "Russian",
          "roman": "tuk-túk",
          "sense": "verbal knocking sound",
          "word": "тук-ту́к"
        },
        {
          "code": "sv",
          "lang": "Swedish",
          "sense": "verbal knocking sound",
          "word": "knack knack"
        },
        {
          "code": "tl",
          "lang": "Tagalog",
          "sense": "verbal knocking sound",
          "word": "tok-tok"
        },
        {
          "code": "tr",
          "lang": "Turkish",
          "sense": "verbal knocking sound",
          "word": "tak tak"
        },
        {
          "code": "vi",
          "lang": "Vietnamese",
          "sense": "verbal knocking sound",
          "word": "gõ gõ"
        }
      ]
    }
  ],
  "word": "knock-knock"
}

{
  "etymology_text": "Onomatopoeic.",
  "head_templates": [
    {
      "args": {},
      "expansion": "knock-knock",
      "name": "en-interj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "intj",
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English entries with language name categories using raw markup",
        "English interjections",
        "English lemmas",
        "English multiword terms",
        "English onomatopoeias",
        "English terms with non-redundant non-automated sortkeys",
        "Japanese terms with redundant script codes"
      ],
      "glosses": [
        "a verbal emulation of a knocking sound"
      ],
      "links": [
        [
          "verbal",
          "verbal"
        ],
        [
          "emulation",
          "emulation"
        ],
        [
          "knocking",
          "knocking"
        ],
        [
          "sound",
          "sound"
        ]
      ]
    }
  ],
  "translations": [
    {
      "code": "cmn",
      "lang": "Chinese Mandarin",
      "roman": "kēke, kàikài",
      "sense": "verbal knocking sound",
      "word": "磕磕"
    },
    {
      "code": "nl",
      "lang": "Dutch",
      "sense": "verbal knocking sound",
      "word": "klop klop"
    },
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "verbal knocking sound",
      "word": "kop kop"
    },
    {
      "code": "fr",
      "lang": "French",
      "sense": "verbal knocking sound",
      "word": "toc-toc"
    },
    {
      "code": "de",
      "lang": "German",
      "sense": "verbal knocking sound",
      "word": "klopf klopf"
    },
    {
      "code": "he",
      "lang": "Hebrew",
      "roman": "tuk tuk",
      "sense": "verbal knocking sound",
      "word": "טוק טוק"
    },
    {
      "code": "id",
      "lang": "Indonesian",
      "sense": "verbal knocking sound",
      "word": "woi woi"
    },
    {
      "code": "ja",
      "lang": "Japanese",
      "roman": "nokkunokku",
      "sense": "verbal knocking sound",
      "word": "ノックノック"
    },
    {
      "code": "ko",
      "lang": "Korean",
      "roman": "ttokttok",
      "sense": "verbal knocking sound",
      "word": "똑똑"
    },
    {
      "code": "ko",
      "lang": "Korean",
      "roman": "nokeunokeu",
      "sense": "verbal knocking sound",
      "word": "노크노크"
    },
    {
      "code": "pl",
      "lang": "Polish",
      "sense": "verbal knocking sound",
      "word": "puk-puk"
    },
    {
      "code": "ru",
      "lang": "Russian",
      "roman": "tuk-túk",
      "sense": "verbal knocking sound",
      "word": "тук-ту́к"
    },
    {
      "code": "sv",
      "lang": "Swedish",
      "sense": "verbal knocking sound",
      "word": "knack knack"
    },
    {
      "code": "tl",
      "lang": "Tagalog",
      "sense": "verbal knocking sound",
      "word": "tok-tok"
    },
    {
      "code": "tr",
      "lang": "Turkish",
      "sense": "verbal knocking sound",
      "word": "tak tak"
    },
    {
      "code": "vi",
      "lang": "Vietnamese",
      "sense": "verbal knocking sound",
      "word": "gõ gõ"
    }
  ],
  "word": "knock-knock"
}