black ball

名词 black ball:

1. the act of excluding someone by a negative vote or veto
   同义词：barring, blackball

动词 black ball:

1. expel from a community or group
   同义词：banish, ban, ostracize, ostracise, shun, cast out, blackball
2. vote against; refuse to endorse; refuse to assent
   同义词：veto, blackball, negative