blackballs

英 [ˈblækbɔːlz]

美 [ˈblækbɔːlz]

v.  投票反对(某人加入俱乐部或团体)
blackball的第三人称单数

柯林斯词典

• VERB 投票反对（某人）加入俱乐部
  If the members of a clubblackballsomeone, they vote against that person being allowed to join their club.
  1. Members can blackball candidates in secret ballots.
     成员可以通过无记名投票反对候选人加入。