1. The act of excluding someone by a negative vote or veto
   "The blackball of the controversial speaker from the event caused heated debate";
   - barring

1. Vote against; refuse to endorse; refuse to assent
   "The President blackballed the bill";
   - veto, negative
    
2. Expel from a community or group
   "The tribe blackballed the offender";
   - banish, ban, ostracize, ostracise [Brit], shun, cast out, pill [slang]

Derived forms: blackballs, blackballing, blackballed

Type of: contradict, controvert, ejection, exclusion, expel, expulsion, kick out [informal], oppose, riddance, throw out

Encyclopedia: Blackball, Westland