Definitions of override
(of the US Congress) a vote taken to pass a bill again after it has been vetoed by the President. The term can also be used of other jurisdictions, although it is most commonly associated with the US Congress.
A legislative override of Bryant's veto would require a 2/3 supermajority vote.
the use of authority to cancel, ignore, or change a decision that someone else made
The Supreme Court ruled against judicial override in Florida.