[1] : WordNet (r) 2.0

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

[2] : Moby Thesaurus II by Grady Ward, 1.0

62 moby thesaurus words for "rollback":
   abatement, agio, allowance, backset, backsliding, backward motion,
   backward step, bank discount, breakage, cash discount,
   chain discount, charge-off, concession, curtailment, cut, cutback,
   deduction, depreciation, discount, drawback, kickback, lapse,
   penalty, penalty clause, percentage, premium, price reduction,
   price-cut, pullback, reaction, rebate, rebatement, recession,
   recidivation, recidivism, reduction, reentry, refluence, reflux,
   refund, regress, regression, relapse, retrenchment, retroaction,
   retrocession, retroflexion, retrogradation, retrogression,
   retrusion, return, salvage, setback, setoff, sternway, tare,
   throwback, time discount, trade discount, tret, underselling,
   write-off

[3] : The Free On-line Dictionary of Computing (27 SEP 03)

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
     
     
see also:
database transaction atomic commit 

Rollback >> R Words
Rollback, definition of term: Rollback
rollback_pag1.html