1. 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.
2. 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.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2019 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.