"shifter cart" meaning in English

{
  "etymology_text": "shifter + go-cart",
  "forms": [
    {
      "form": "shifter carts",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "shifter cart (plural shifter carts)",
      "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"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Automobiles",
          "orig": "en:Automobiles",
          "parents": [
            "Automotive",
            "Vehicles",
            "Transport",
            "Machines",
            "All topics",
            "Technology",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Motor racing",
          "orig": "en:Motor racing",
          "parents": [
            "Automotive",
            "Sports",
            "Transport",
            "Human activity",
            "All topics",
            "Human behaviour",
            "Fundamental",
            "Human"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A type of small personal vehicle used in racing."
      ],
      "id": "en-shifter_cart-en-noun--LT307Un",
      "links": [
        [
          "motor racing",
          "motor racing"
        ]
      ],
      "raw_glosses": [
        "(motor racing) A type of small personal vehicle used in racing."
      ],
      "topics": [
        "hobbies",
        "lifestyle",
        "motor-racing",
        "racing",
        "sports"
      ]
    }
  ],
  "word": "shifter cart"
}

{
  "etymology_text": "shifter + go-cart",
  "forms": [
    {
      "form": "shifter carts",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "shifter cart (plural shifter carts)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Automobiles",
        "en:Motor racing"
      ],
      "glosses": [
        "A type of small personal vehicle used in racing."
      ],
      "links": [
        [
          "motor racing",
          "motor racing"
        ]
      ],
      "raw_glosses": [
        "(motor racing) A type of small personal vehicle used in racing."
      ],
      "topics": [
        "hobbies",
        "lifestyle",
        "motor-racing",
        "racing",
        "sports"
      ]
    }
  ],
  "word": "shifter cart"
}