Blackball vs. Blacklist

Blackball and Blacklist Definitions
Blackball
A negative vote, especially one that blocks the admission of an applicant to an organization.
Blacklist
A list of persons or organizations that have incurred disapproval or suspicion or are to be boycotted or otherwise penalized.
Blackball
A small black ball used as a negative ballot.
Blacklist
A list of email addresses, IP addresses, domains, or keywords, that are expressly blocked by an email account.
Blackball
To vote against, especially to veto the admission of.
Blacklist
To place on or as if on a blacklist.
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Blackball
To shut out from social or commercial participation; ostracize or boycott.
Blacklist
A list or set of people or entities to be shunned or banned.
The software included a lengthy blacklist of disreputable websites to block.
Blackball
(countable) A rejection; a vote against admitting someone.
Blacklist
(transitive) To place on a blacklist; to mark a person or entity as one to be shunned or banned.
You can blacklist known spammers with that button.
Blackball
(countable) 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.
Blacklist
A list of people who are out of favor
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Blackball
(countable) A kind of large black sweet; a niggerball.
Blacklist
Put on a blacklist so as to banish or cause to be boycotted;
Many books were blacklisted by the Nazis
Blackball
A substance for blacking shoes, boots, etc. or for taking impressions of engraved work.
Blackball
(uncountable) A game, a standardized version of the English version of eight-ball.
Reds and yellows
Blackball
(transitive) 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.
Blackball
(transitive) To ostracize.
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Blackball
A composition for blacking shoes, boots, etc.; also, one for taking impressions of engraved work.
Blackball
A ball of black color, esp. one used as a negative in voting; - in this sense usually two words.
Blackball
To vote against, by putting a black ball into a ballot box; to reject or exclude, as by voting against with black balls; to ostracize.
He was blackballed at two clubs in succession.
Blackball
To blacken (leather, shoes, etc.) with blacking.
Blackball
The act of excluding someone by a negative vote or veto
Blackball
Expel from a community or group
Blackball
Vote against; refuse to endorse; refuse to assent;
The President vetoed the bill