"^W" meaning in English

{
  "head_templates": [
    {
      "args": {},
      "expansion": "^W",
      "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": "topical",
          "langcode": "en",
          "name": "Internet",
          "orig": "en:Internet",
          "parents": [
            "Computing",
            "Networking",
            "Technology",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "Yeah, he's a real jerk^W civility-challenged fellow."
        },
        {
          "text": "Well, Mimi, you’re old enough that you should go to parties now, so this should be your last year to tickle feet^W^W trick-or-treat."
        }
      ],
      "glosses": [
        "Delete that last word."
      ],
      "id": "en-^W-en-intj-tbXmr0lI",
      "links": [
        [
          "Internet",
          "Internet"
        ],
        [
          "humorous",
          "humorous"
        ],
        [
          "Delete",
          "delete"
        ],
        [
          "last",
          "last"
        ],
        [
          "word",
          "word"
        ]
      ],
      "raw_glosses": [
        "(Internet slang, usually humorous) Delete that last word."
      ],
      "related": [
        {
          "word": "^H"
        }
      ],
      "tags": [
        "Internet",
        "humorous",
        "usually"
      ]
    }
  ],
  "word": "^W"
}

{
  "head_templates": [
    {
      "args": {},
      "expansion": "^W",
      "name": "en-interj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "intj",
  "related": [
    {
      "word": "^H"
    }
  ],
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English humorous terms",
        "English interjections",
        "English lemmas",
        "English slang",
        "English terms spelled with ^",
        "English words without vowels",
        "en:Internet"
      ],
      "examples": [
        {
          "text": "Yeah, he's a real jerk^W civility-challenged fellow."
        },
        {
          "text": "Well, Mimi, you’re old enough that you should go to parties now, so this should be your last year to tickle feet^W^W trick-or-treat."
        }
      ],
      "glosses": [
        "Delete that last word."
      ],
      "links": [
        [
          "Internet",
          "Internet"
        ],
        [
          "humorous",
          "humorous"
        ],
        [
          "Delete",
          "delete"
        ],
        [
          "last",
          "last"
        ],
        [
          "word",
          "word"
        ]
      ],
      "raw_glosses": [
        "(Internet slang, usually humorous) Delete that last word."
      ],
      "tags": [
        "Internet",
        "humorous",
        "usually"
      ]
    }
  ],
  "word": "^W"
}