an authorial figure that examines and reviews materials (books, movies, etc.) and suppresses parts that are unacceptable, before making it available the public;
e.g. The censor blocked all my efforts to include the notion of religion and its importance on politics in my debate.
(verb)
to review and examine materials (book, movie, etc.) and redact or suppress parts that are unacceptable;
e.g. Some of the scenes from the movie are being censored because they are extremely violent or gory.