#1
blackball n. [
barring] the act of excluding someone by a negative vote or veto
. wn #2
blackball v. [
banish, ban, ostracize, ostracise, shun, cast out] expel from a community or group
. wn #3
blackball v. [
veto, negative] vote against; refuse to endorse; refuse to assent; "The President vetoed the bill"
. wn