"manback" meaning in English

{
  "etymology_text": "Compare horseback.",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "manback (uncountable)",
      "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": "1891, Daniel Ammen, The Old Navy and the New, page 205:",
          "text": "Fatigued by riding onhorseback, bedevilled and begrimed by the ride on manback, he presented a pitiable spectacle, and went on his way to Naples in sad plight. Several officers formed a party to Paestum, now known as Pesto, to see the temples so venerable in years that the date of their[…]",
          "type": "quote"
        }
      ],
      "glosses": [
        "The back of a man (being ridden, or really or figuratively laden with burdens, as a means of transportation)."
      ],
      "id": "en-manback-en-noun-ANJzhEvU",
      "links": [
        [
          "back",
          "back"
        ],
        [
          "man",
          "man"
        ]
      ],
      "tags": [
        "uncountable"
      ]
    }
  ],
  "word": "manback"
}

{
  "etymology_text": "Compare horseback.",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "manback (uncountable)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English terms with quotations",
        "English uncountable nouns",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "examples": [
        {
          "ref": "1891, Daniel Ammen, The Old Navy and the New, page 205:",
          "text": "Fatigued by riding onhorseback, bedevilled and begrimed by the ride on manback, he presented a pitiable spectacle, and went on his way to Naples in sad plight. Several officers formed a party to Paestum, now known as Pesto, to see the temples so venerable in years that the date of their[…]",
          "type": "quote"
        }
      ],
      "glosses": [
        "The back of a man (being ridden, or really or figuratively laden with burdens, as a means of transportation)."
      ],
      "links": [
        [
          "back",
          "back"
        ],
        [
          "man",
          "man"
        ]
      ],
      "tags": [
        "uncountable"
      ]
    }
  ],
  "word": "manback"
}