n. & v.
n. 1 a the obstruction of progress in a legislative assembly, esp. by prolonged speaking. b esp. US a person who engages in a filibuster. 2 esp. hist. a person engaging in unauthorized warfare against a foreign State.
v. 1 intr. act as a filibuster. 2 tr. act in this way against (a motion etc.). filibusterer n.
[ ult. f. Du. vrijbuiter FREEBOOTER, infl. by F flibustier, Sp. filibustero ]