"shag wagon" meaning in English

{
  "forms": [
    {
      "form": "shag wagons",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "shag wagon (plural shag wagons)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "shagging wagon"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Sex",
          "orig": "en:Sex",
          "parents": [
            "All topics",
            "Reproduction",
            "Fundamental",
            "Life",
            "Nature"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Vehicles",
          "orig": "en:Vehicles",
          "parents": [
            "Machines",
            "Transport",
            "Technology",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Alternative form of shagging wagon"
      ],
      "id": "en-shag_wagon-en-noun-RbLSty3k",
      "links": [
        [
          "shagging wagon",
          "shagging wagon#English"
        ]
      ],
      "raw_glosses": [
        "(slang) Alternative form of shagging wagon"
      ],
      "tags": [
        "alt-of",
        "alternative",
        "slang"
      ]
    }
  ],
  "word": "shag wagon"
}

{
  "forms": [
    {
      "form": "shag wagons",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "shag wagon (plural shag wagons)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "shagging wagon"
        }
      ],
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English slang",
        "en:Sex",
        "en:Vehicles"
      ],
      "glosses": [
        "Alternative form of shagging wagon"
      ],
      "links": [
        [
          "shagging wagon",
          "shagging wagon#English"
        ]
      ],
      "raw_glosses": [
        "(slang) Alternative form of shagging wagon"
      ],
      "tags": [
        "alt-of",
        "alternative",
        "slang"
      ]
    }
  ],
  "word": "shag wagon"
}