"ban hammer" meaning in English

{
  "forms": [
    {
      "form": "ban hammers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "ban hammer (plural ban hammers)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "banhammer"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "2011 March 15, John Brownlee, “Valve teaches kid a lesson for trying to sell his Steam account”, in geek.com, Ziff Davis, archived from the original on 2019-09-22",
          "text": "Selling your Steam account is a huge violation of Steam’s Subscriber Agreement (..) Worse, someone from Valve was reading. Down came the ban hammer… freezing the Reddit user out of his Steam account.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Alternative spelling of banhammer."
      ],
      "id": "en-ban_hammer-en-noun-aGYLBZFe",
      "links": [
        [
          "banhammer",
          "banhammer#English"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative"
      ]
    }
  ],
  "word": "ban hammer"
}

{
  "forms": [
    {
      "form": "ban hammers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "ban hammer (plural ban hammers)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "banhammer"
        }
      ],
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with quotations"
      ],
      "examples": [
        {
          "ref": "2011 March 15, John Brownlee, “Valve teaches kid a lesson for trying to sell his Steam account”, in geek.com, Ziff Davis, archived from the original on 2019-09-22",
          "text": "Selling your Steam account is a huge violation of Steam’s Subscriber Agreement (..) Worse, someone from Valve was reading. Down came the ban hammer… freezing the Reddit user out of his Steam account.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Alternative spelling of banhammer."
      ],
      "links": [
        [
          "banhammer",
          "banhammer#English"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative"
      ]
    }
  ],
  "word": "ban hammer"
}