rollover

名词 rollover:

1. the act of changing the institution that invests your pension plan without incurring a tax penalty

roll.o.ver

n.（名词）
The act or process of rolling over.
滚翻的行为或过程
An accident in which a motor vehicle overturns.
一种汽车倾翻的翻车事故
Economics Reinvestment of profits received from one often short-term security into another, similar security:
【经济学】 再投资：把从短期证券得来的利润重新投入另一类似证券的做法：
例句：
an IRA rollover.
个人退休金帐户的再投资