"bloody back" meaning in English

{
  "etymology_text": "From the military practice of flogging as discipline.",
  "forms": [
    {
      "form": "bloody backs",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "bloody back (plural bloody backs)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1912, Ralph Davol, Two Men of Taunton: In the Course of Human Events, 1731-1829, page 214",
          "text": "[…] how the troops came marching out for evening exercise under Captain Preston; how pedestrians and street urchins taunted them, shouting \"Lobsters,\" \"Bloody-backs,\" and flinging snow-balls, turnips, […]",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A soldier."
      ],
      "id": "en-bloody_back-en-noun-dnCdlUFH",
      "links": [
        [
          "derogatory",
          "derogatory"
        ],
        [
          "soldier",
          "soldier"
        ]
      ],
      "raw_glosses": [
        "(slang, archaic, derogatory) A soldier."
      ],
      "synonyms": [
        {
          "word": "bloody-back"
        }
      ],
      "tags": [
        "archaic",
        "derogatory",
        "slang"
      ]
    }
  ],
  "word": "bloody back"
}

{
  "etymology_text": "From the military practice of flogging as discipline.",
  "forms": [
    {
      "form": "bloody backs",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "bloody back (plural bloody backs)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English derogatory terms",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English slang",
        "English terms with archaic senses",
        "English terms with quotations"
      ],
      "examples": [
        {
          "ref": "1912, Ralph Davol, Two Men of Taunton: In the Course of Human Events, 1731-1829, page 214",
          "text": "[…] how the troops came marching out for evening exercise under Captain Preston; how pedestrians and street urchins taunted them, shouting \"Lobsters,\" \"Bloody-backs,\" and flinging snow-balls, turnips, […]",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A soldier."
      ],
      "links": [
        [
          "derogatory",
          "derogatory"
        ],
        [
          "soldier",
          "soldier"
        ]
      ],
      "raw_glosses": [
        "(slang, archaic, derogatory) A soldier."
      ],
      "tags": [
        "archaic",
        "derogatory",
        "slang"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "bloody-back"
    }
  ],
  "word": "bloody back"
}