A rejection; a vote against admitting someone.
A black ball used to indicate such a negative vote.
Regardless how many other people may have voted to approve a candidate for membership, a single blackball will reject the candidate.
A kind of large black sweet; a niggerball.
A substance for blacking shoes, boots, etc. or for taking impressions of engraved work.
To vote against, especially in an exclusive organization.
If you're not from a moneyed, well-connected family, you can count on getting blackballed from the fraternity.
To ostracize.