blacklist: Meaning and Definition of

black•list

1. a list of persons under suspicion, disfavor, censure, etc.: His record as an anarchist put him on the government's blacklist.
2. a list privately exchanged among employers, containing the names of persons to be barred from employment because of untrustworthiness or for holding opinions considered undesirable.
3. a list drawn up by a labor union, containing the names of employers to be boycotted for unfair labor practices.

1. to put (a person, group, company, etc.) on a blacklist.