1 N-COUNT [usually singular] （彩票奖金的）累积，顺延，滚动增加 In a lottery draw, a rollover is a prize that includes the prize money from the previous draw, because nobody won it. （彩票奖金的）累积，顺延，滚动增加

2 N-COUNT [usually singular] （贷款等的）延期，展期 In finance, a rollover is when a loan or other financial arrangement is extended. （贷款等的）延期，展期

3 N-COUNT 翻车;翻船;倾翻 A rollover is an incident where a vehicle or boat turns over completely, usually finishing the right way up. 翻车;翻船;倾翻