"burp gun" meaning in English

{
  "forms": [
    {
      "form": "burp guns",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "burp gun (plural burp guns)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "American English",
          "parents": [],
          "source": "w"
        },
        {
          "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 topic categories using raw markup",
          "parents": [
            "Entries with topic categories using raw markup",
            "Entry maintenance"
          ],
          "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": "topical",
          "langcode": "en",
          "name": "Firearms",
          "orig": "en:Firearms",
          "parents": [
            "Weapons",
            "Hunting",
            "Military",
            "Tools",
            "Human activity",
            "Society",
            "Technology",
            "Human behaviour",
            "All topics",
            "Human",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A small submachine gun"
      ],
      "id": "en-burp_gun-en-noun-eL6D~hNN",
      "links": [
        [
          "submachine",
          "submachine"
        ]
      ],
      "raw_glosses": [
        "(US, slang) A small submachine gun"
      ],
      "tags": [
        "US",
        "slang"
      ]
    }
  ],
  "sounds": [
    {
      "audio": "En-au-burp gun.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/c/c0/En-au-burp_gun.ogg/En-au-burp_gun.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/c/c0/En-au-burp_gun.ogg",
      "tags": [
        "Australia"
      ],
      "text": "Audio (AU)"
    }
  ],
  "word": "burp gun"
}

{
  "forms": [
    {
      "form": "burp guns",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "burp gun (plural burp guns)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "American English",
        "English countable nouns",
        "English entries with incorrect language header",
        "English entries with topic categories using raw markup",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English slang",
        "English terms with audio links",
        "English terms with non-redundant non-automated sortkeys",
        "en:Firearms"
      ],
      "glosses": [
        "A small submachine gun"
      ],
      "links": [
        [
          "submachine",
          "submachine"
        ]
      ],
      "raw_glosses": [
        "(US, slang) A small submachine gun"
      ],
      "tags": [
        "US",
        "slang"
      ]
    }
  ],
  "sounds": [
    {
      "audio": "En-au-burp gun.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/c/c0/En-au-burp_gun.ogg/En-au-burp_gun.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/c/c0/En-au-burp_gun.ogg",
      "tags": [
        "Australia"
      ],
      "text": "Audio (AU)"
    }
  ],
  "word": "burp gun"
}