from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A reduction, especially in prices or wages, to a previous lower level by governmental action or direction: a price rollback; a rollback of military supplies.
- n. A turning back or retreat, as from a previously held position or policy: hoped for a rollback of support for the opposition's proposed legislation.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- v. To roll back.
- n. A return to a prior state.
- n. A withdrawal of military forces.
- n. An operation which returns a database, or group of records in a database, to a previous state (normally to the previous commit point).
- n. An event caused by a roller coaster failing to reach the top of a hill.
- n. a form of flatbed truck adapted or designed specifically as a tow truck or for transporting other vehicles
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. the act of forcing the enemy to withdraw
- n. reducing prices back to some earlier level
roll + back (Wiktionary)