an action such as a prolonged speech that obstructs progress in a legislative assembly while not technically contravening the required procedures
the bill was defeated by a Senate filibuster in June
a person engaging in unauthorized warfare against a foreign state.
act in an obstructive manner in a legislative assembly, especially by speaking at inordinate length
he was one of four Tories who filibustered for more than 30 minutes each to derail the free parking plan