1.
a failure by the U.S. president to return a bill passed by Congress during its last days in session, in order to prevent its being enacted
2.
the holding of a bill by a state governor or other executive toward the end of a legislative session to prevent its enactment
3.
a method that the U.S. President can use to stop a bill from becoming law, in which they keep the bill without signing it until it is too late to sign it