censor

Concise Oxford English Dictionary © 2008 Oxford University Press:
censor/ˈsensə(r)/

▶noun

• 1 an official who examines material that is to be published and suppresses parts considered offensive or a threat to security.

  ■ Psychoanalysis an aspect of the superego which prevents certain ideas and memories from emerging into consciousness.

• 2 (in ancient Rome) a magistrate who held censuses and supervised public morals.

▶verb examine (a book, film, etc.) officially and suppress unacceptable parts of it.

– derivatives
censorial adjective,
censorship noun.

– origin C16: from L., from censere ‘assess’.