- to vote against (a candidate, applicant, etc.).
- to exclude socially; ostracize: The whole town blackballed them.
- to reject (a candidate) by placing a blackball in the ballot box.
- a negative vote, especially in deciding on an applicant or candidate.
- a black ball placed in a ballot box signifying a negative vote.
- a negative vote or veto
- a black wooden ball used to indicate disapproval or to veto in a vote
- a hard boiled sweet with black-and-white stripes
- to vote against in a ballot
- to exclude (someone) from a group, profession, etc; ostracize