WordNet (r) 3.0 (2006):

rollback
    n 1: the act of forcing the enemy to withdraw [syn: rollback,
         push back]
    2: reducing prices back to some earlier level

The Free On-line Dictionary of Computing (19 January 2023):

rollback

    Reverting data in a database to an earlier state,
   usually in response to an error or aborted operation.

   In a transaction based database system, transactions are
   considered atomic.  If an error occurs while performing a
   transaction, the database is automatically rolled back
   to the state at the previous commit.

   Rollback may also be performed by an explicit rollback
   transaction.

   (2000-01-15)