term:

Filibuster

filibuster n

: the use of extreme dilatory tactics in an attempt to delay or prevent action esp. in a legislative assembly
;also
: an instance of this practice
vb -tered
-ter·ing
vi
: to engage in a filibuster
vt
: to subject to a filibuster

Source: Merriam-Webster's Dictionary of Law ©1996. Merriam-Webster, Incorporated. Published under license with Merriam-Webster, Incorporated.