"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"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "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": "quote"
        }
      ],
      "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",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "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": "quote"
        }
      ],
      "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"
}