rego
/ˈredʒəʊ/(亦作reggo)
noun
often as modifier
1- Austral./NZ informal a motor-vehicle registration〈澳/新西兰, 非正式〉（汽车）牌照号码。
1.1
- mass noun the action of registering, especially for an activity; registration登记, 注册, 挂号：
footy rego day.
足球赛登记日。
词源
1960s: abbreviation of REGISTRATION + the colloquial suffix -O.