censor

1. One of the two magistrates who originally administered the census of citizens, and by Classical times (between the 8th century B.C.E. and the 6th century C.E.) was a high judge of public behaviour and morality.

   The Ancient Roman censors were part of the cursus honorum, a series of public offices held during a political career, like consuls and praetors.

2. An official responsible for the removal or suppression of objectionable material (for example, if obscene or likely to incite violence) or sensitive content in books, films, correspondence, and other media.

   The headmaster was an even stricter censor of his boarding pupils’ correspondence than the enemy censors had been of his own when the country was occupied.

3. A college or university official whose duties vary depending on the institution.
4. One who censures or condemns.

1. To review for, and if necessary to remove or suppress, content from books, films, correspondence, and other media which is regarded as objectionable (for example, obscene, likely to incite violence, or sensitive).

   Occupying powers typically censor anything reeking of resistance

noun

A hypothetical subconscious agency which filters unacceptable thought before it reaches the conscious mind.