"biù" meaning in Mandarin

{
  "forms": [
    {
      "form": "biu",
      "tags": [
        "alternative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "cmn",
        "2": "interjection"
      },
      "expansion": "biù",
      "name": "head"
    }
  ],
  "lang": "Mandarin",
  "lang_code": "cmn",
  "pos": "intj",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Chinese terms written in foreign scripts",
          "parents": [
            "Terms written in foreign scripts",
            "Terms by orthographic property",
            "Terms by lexical property"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Mandarin entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Mandarin onomatopoeias",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "sound of gun shot; pew"
      ],
      "id": "en-biù-cmn-intj-vJfQIgjy",
      "links": [
        [
          "childish",
          "childish"
        ],
        [
          "pew",
          "pew"
        ]
      ],
      "raw_glosses": [
        "(possibly childish, onomatopoeia) sound of gun shot; pew"
      ],
      "tags": [
        "childish",
        "onomatopoeic",
        "possibly"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/pi̯oʊ̯⁵¹/"
    }
  ],
  "word": "biù"
}

{
  "forms": [
    {
      "form": "biu",
      "tags": [
        "alternative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "cmn",
        "2": "interjection"
      },
      "expansion": "biù",
      "name": "head"
    }
  ],
  "lang": "Mandarin",
  "lang_code": "cmn",
  "pos": "intj",
  "senses": [
    {
      "categories": [
        "Chinese interjections",
        "Chinese lemmas",
        "Chinese terms with IPA pronunciation",
        "Chinese terms written in foreign scripts",
        "Mandarin childish terms",
        "Mandarin entries with incorrect language header",
        "Mandarin interjections",
        "Mandarin lemmas",
        "Mandarin onomatopoeias",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "glosses": [
        "sound of gun shot; pew"
      ],
      "links": [
        [
          "childish",
          "childish"
        ],
        [
          "pew",
          "pew"
        ]
      ],
      "raw_glosses": [
        "(possibly childish, onomatopoeia) sound of gun shot; pew"
      ],
      "tags": [
        "childish",
        "onomatopoeic",
        "possibly"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/pi̯oʊ̯⁵¹/"
    }
  ],
  "word": "biù"
}