"monkey bike" meaning in English

{
  "etymology_text": "Came to be known as a monkey bike because those riding them \"looked like monkeys\".",
  "forms": [
    {
      "form": "monkey bikes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "monkey bike (plural monkey bikes)",
      "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": "Automotive",
          "orig": "en:Automotive",
          "parents": [
            "Transport",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "The Honda Z series, a line of minibikes."
      ],
      "id": "en-monkey_bike-en-noun-HWzg-No6",
      "links": [
        [
          "automotive",
          "automotive"
        ],
        [
          "minibike",
          "minibike"
        ]
      ],
      "raw_glosses": [
        "(slang, automotive) The Honda Z series, a line of minibikes."
      ],
      "tags": [
        "slang"
      ],
      "topics": [
        "automotive",
        "transport",
        "vehicles"
      ]
    }
  ],
  "word": "monkey bike"
}

{
  "etymology_text": "Came to be known as a monkey bike because those riding them \"looked like monkeys\".",
  "forms": [
    {
      "form": "monkey bikes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "monkey bike (plural monkey bikes)",
      "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",
        "English slang",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Automotive"
      ],
      "glosses": [
        "The Honda Z series, a line of minibikes."
      ],
      "links": [
        [
          "automotive",
          "automotive"
        ],
        [
          "minibike",
          "minibike"
        ]
      ],
      "raw_glosses": [
        "(slang, automotive) The Honda Z series, a line of minibikes."
      ],
      "tags": [
        "slang"
      ],
      "topics": [
        "automotive",
        "transport",
        "vehicles"
      ]
    }
  ],
  "word": "monkey bike"
}