Definitions
1.NounA rejection; a vote against admitting someone.
2.NounA 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."
3.NounA kind of large black sweet, a black-colored gobstopper.
4.NounA substance for blacking shoes, boots, etc. or for taking impressions of engraved work.
5.NounA game, a standardized version of the English version of eight-ball.
6.VerbTo 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."
7.VerbTo ostracize.