A tricycle — a cycle with three wheels. It is the short, friendly, spoken form, the way bike is short for bicycle.

A tricycle三輪車——a cycle一種車 with three wheels有三個輪子的。It它 是 the short, friendly, spoken form簡短、親切的口語說法，the way就像 bike「bike」 is short for是……的簡稱 bicycle「bicycle」一樣。

Most often it means a small child's first riding toy, with pedals on the front wheel, before they are steady enough for a two-wheeler. But it also covers grown-up machines: a three-wheeled motorbike, or the low three-wheeled cycle an older person or a person with balance problems rides because it cannot fall over.

Most often最常見的情況是 it它 means指的是 a small child's first riding toy小小孩第一台會騎的玩具車，with pedals裝著踏板 on the front wheel在前輪上，before在……之前 they are steady enough他們還沒辦法穩穩騎 for a two-wheeler兩輪車。But不過 it它 also covers也包括 grown-up machines大人用的車：a three-wheeled motorbike三輪機車，or或者 the low three-wheeled cycle那種低底盤的三輪車 an older person年長者 or或 a person with balance problems有平衡問題的人 rides會騎 because因為 it cannot fall over它不會倒。

Because it is a shortening, it feels casual and warm. Parents say trike; a shop catalogue might write tricycle.

Because因為 it它 是 a shortening一個簡稱，it它 feels聽起來 casual and warm輕鬆又親切。Parents爸媽 say trike會說「trike」；a shop catalogue商店型錄 might write可能會寫 tricycle「tricycle」。

You will also hear it as a verb in some places — to trike somewhere is to travel by trike — but that is uncommon and you never need to produce it.

You你 will also hear它也會 hear it as a verb被當動詞用 in some places在某些地方——to trike somewhere「to trike somewhere」 is就是 to travel by trike騎三輪車去某處——but但 that這 是 uncommon不常見，and而且 you never need你完全不需要 to produce it自己講出這個用法。

In the Philippines, tricycle (a motorbike with a side car) is a normal way to get around town, and English speakers there use it constantly; that is worth knowing if you travel.

In the Philippines在菲律賓，tricycle「tricycle」（a motorbike with a side car一種有邊車的機車）是 a normal way一種常見的方式 to get around town在城裡代步，and而 English speakers there那裡講英文的人 use it constantly常常這樣用；that這 是 worth knowing值得知道 if you travel如果你要去旅行的話。

Also note: dinosaur fans call Triceratops a trike too, though that is a nickname, not the dictionary word.

Also note另外要注意，dinosaur fans恐龍迷 call Triceratops把三角龍 a trike too也叫做「trike」，though不過 that這 是 a nickname一個暱稱，not the dictionary word不是字典裡的正式用法。