Definition of "blacklist" in English

noun

1. (law, computing) A list or set of people or entities to be shunned or banned, disallowed or blocked.

   • The software included a lengthy blacklist of disreputable websites to block.

verb

1. (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.