"backaching" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "back",
        "3": "aching"
      },
      "expansion": "back + aching",
      "name": "com"
    }
  ],
  "etymology_text": "back + aching",
  "head_templates": [
    {
      "args": {
        "1": "?"
      },
      "expansion": "backaching",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1957, Charles Anscomb, Submariner, page 160",
          "text": "Then the rest of us had to crawl on hands and knees slowly towards the tree picking up the things. It was dull and backaching.",
          "type": "quotation"
        },
        {
          "ref": "1993, National Geographic (volume 84? 184? page 110)",
          "text": "Hedging, as I was learning, is not just skilled work but also cold, rugged, muddy, and backaching."
        }
      ],
      "glosses": [
        "Causing a pain in one's back."
      ],
      "id": "en-backaching-en-adj-dQtlycsJ",
      "links": [
        [
          "pain",
          "pain"
        ],
        [
          "back",
          "back"
        ]
      ]
    }
  ],
  "word": "backaching"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "back",
        "3": "aching"
      },
      "expansion": "back + aching",
      "name": "com"
    }
  ],
  "etymology_text": "back + aching",
  "head_templates": [
    {
      "args": {
        "1": "?"
      },
      "expansion": "backaching",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        "English adjectives",
        "English compound terms",
        "English entries with incorrect language header",
        "English lemmas",
        "English terms with quotations"
      ],
      "examples": [
        {
          "ref": "1957, Charles Anscomb, Submariner, page 160",
          "text": "Then the rest of us had to crawl on hands and knees slowly towards the tree picking up the things. It was dull and backaching.",
          "type": "quotation"
        },
        {
          "ref": "1993, National Geographic (volume 84? 184? page 110)",
          "text": "Hedging, as I was learning, is not just skilled work but also cold, rugged, muddy, and backaching."
        }
      ],
      "glosses": [
        "Causing a pain in one's back."
      ],
      "links": [
        [
          "pain",
          "pain"
        ],
        [
          "back",
          "back"
        ]
      ]
    }
  ],
  "word": "backaching"
}