Rollbacks

noun

1. A return to a prior state by undoing some operation.
2. A withdrawal of military forces.
3. An operation which returns a database, or group of records in a database, to a previous state (normally to the previous commit point).
4. The situation where a rollercoaster fails to reach the top of a hill and instead rolls backward.
5. (mechanics' jargon) A form of flatbed truck adapted or designed specifically as a tow truck or for transporting other vehicles.