"arse-up" meaning in English

{
  "forms": [
    {
      "form": "arse-ups",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "arse-up (plural arse-ups)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Australian English",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "British 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": "Irish English",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "New Zealand English",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "A mistake or blunder; a cock-up."
      ],
      "id": "en-arse-up-en-noun-CNsOYhgt",
      "links": [
        [
          "mistake",
          "mistake"
        ],
        [
          "blunder",
          "blunder"
        ],
        [
          "cock-up",
          "cock-up"
        ]
      ],
      "raw_glosses": [
        "(UK, Ireland, Australia, New Zealand, slang, vulgar) A mistake or blunder; a cock-up."
      ],
      "tags": [
        "Australia",
        "Ireland",
        "New-Zealand",
        "UK",
        "slang",
        "vulgar"
      ]
    }
  ],
  "word": "arse-up"
}

{
  "forms": [
    {
      "form": "arse-ups",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "arse-up (plural arse-ups)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Australian English",
        "British English",
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English slang",
        "English vulgarities",
        "Irish English",
        "New Zealand English"
      ],
      "glosses": [
        "A mistake or blunder; a cock-up."
      ],
      "links": [
        [
          "mistake",
          "mistake"
        ],
        [
          "blunder",
          "blunder"
        ],
        [
          "cock-up",
          "cock-up"
        ]
      ],
      "raw_glosses": [
        "(UK, Ireland, Australia, New Zealand, slang, vulgar) A mistake or blunder; a cock-up."
      ],
      "tags": [
        "Australia",
        "Ireland",
        "New-Zealand",
        "UK",
        "slang",
        "vulgar"
      ]
    }
  ],
  "word": "arse-up"
}