"at one blow" meaning in English

{
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "at one blow (not comparable)",
      "name": "en-adv"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adv",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1884 [before 1557], Jacob Grimm, Wilhelm Grimm, Margaret Hunt, editors, The Valiant Little Tailor [European folk tale] (Grimm's Household Tales; 1)",
          "text": "'There is no lack of strength,' answered the little tailor. 'Dost thou think that could be anything to a man who has struck down seven at one blow?'",
          "type": "quotation"
        },
        {
          "ref": "1960 February, “Motive Power Miscellany: London Midland Region”, in Trains Illustrated, page 115",
          "text": "[...] also notable is the condemnation of all but one of the nine Stanier 0-4-4 tanks at one blow.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "With one strike (of a hand, tool, or weapon)."
      ],
      "id": "en-at_one_blow-en-adv-1NgjMv89",
      "related": [
        {
          "word": "at one blast"
        },
        {
          "word": "at one stroke"
        }
      ],
      "tags": [
        "not-comparable"
      ]
    }
  ],
  "word": "at one blow"
}

{
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "at one blow (not comparable)",
      "name": "en-adv"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adv",
  "related": [
    {
      "word": "at one blast"
    },
    {
      "word": "at one stroke"
    }
  ],
  "senses": [
    {
      "categories": [
        "English adverbs",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English terms with quotations",
        "English uncomparable adverbs"
      ],
      "examples": [
        {
          "ref": "1884 [before 1557], Jacob Grimm, Wilhelm Grimm, Margaret Hunt, editors, The Valiant Little Tailor [European folk tale] (Grimm's Household Tales; 1)",
          "text": "'There is no lack of strength,' answered the little tailor. 'Dost thou think that could be anything to a man who has struck down seven at one blow?'",
          "type": "quotation"
        },
        {
          "ref": "1960 February, “Motive Power Miscellany: London Midland Region”, in Trains Illustrated, page 115",
          "text": "[...] also notable is the condemnation of all but one of the nine Stanier 0-4-4 tanks at one blow.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "With one strike (of a hand, tool, or weapon)."
      ],
      "tags": [
        "not-comparable"
      ]
    }
  ],
  "word": "at one blow"
}