What is Rollover?

Legal Definition
A rollover is a type of vehicle crash in which a vehicle tips over onto its side or roof. Rollovers have a higher fatality rate than other types of vehicle collisions.
-- Wikipedia
Legal Definition
When a repurchase agreement, revolving credit facility, evergreen deposit, commercial paper, account payable, or not is renewed or reissued as it comes due providing continued funding for the debtor.