What does it mean to Quash a warrant?

When a warrant is quashed it means that the warrant has been voided or set aside.  To quash means void or declare invalid.  When the warrant, bench warrant, subpoena or other action is irregular or improper – perhaps the court did not have jurisdiction, or they had the wrong identification of a person, then the action will be voided or quashed by the court.  Quashing is an action used in both criminal and civil courts. 

The person with the warrant can contact their attorney to have them file a Motion to Quash.  This will require a hearing before the judge in most cases. The motion might also require asking another court to look at the legality of the action whether it be a warrant, subpoena, or even a jury selection. Perhaps the court did not follow the law when it issued the warrant, so the motion will allow another court to find the action meaningless, and thus the warrant would be voided or quashed. 

Once quashed, the warrant would be voided and you would no longer have to worry or deal with the warrant, or other action.