"whoop-whoop" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en"
      },
      "expansion": "Onomatopoeic",
      "name": "onomatopoeic"
    }
  ],
  "etymology_text": "Onomatopoeic",
  "head_templates": [
    {
      "args": {
        "1": "?"
      },
      "expansion": "whoop-whoop",
      "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 onomatopoeias",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "2014 October 28, Sol Stein, A Deniable Man, Untreed Reads, →OCLC",
          "text": "I heard the distinct whoop-whoop of the police siren behind us.",
          "type": "quotation"
        },
        {
          "ref": "2019 March 22, Kate Jonez, Lady Bits, JournalStone, →OCLC",
          "text": "I can barely hear the whoop-whoop of the sheriff's siren.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "The sound of a police car siren."
      ],
      "id": "en-whoop-whoop-en-noun-7CZnZAQD",
      "links": [
        [
          "police car",
          "police car"
        ],
        [
          "siren",
          "siren"
        ]
      ]
    }
  ],
  "word": "whoop-whoop"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en"
      },
      "expansion": "Onomatopoeic",
      "name": "onomatopoeic"
    }
  ],
  "etymology_text": "Onomatopoeic",
  "head_templates": [
    {
      "args": {
        "1": "?"
      },
      "expansion": "whoop-whoop",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English nouns with unknown or uncertain plurals",
        "English onomatopoeias",
        "English terms with quotations"
      ],
      "examples": [
        {
          "ref": "2014 October 28, Sol Stein, A Deniable Man, Untreed Reads, →OCLC",
          "text": "I heard the distinct whoop-whoop of the police siren behind us.",
          "type": "quotation"
        },
        {
          "ref": "2019 March 22, Kate Jonez, Lady Bits, JournalStone, →OCLC",
          "text": "I can barely hear the whoop-whoop of the sheriff's siren.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "The sound of a police car siren."
      ],
      "links": [
        [
          "police car",
          "police car"
        ],
        [
          "siren",
          "siren"
        ]
      ]
    }
  ],
  "word": "whoop-whoop"
}