Source : Webster's Revised Unabridged Dictionary (1913)

Censor \Cen"sor\, n. [L. censor, fr. censere to value, tax.]
   1. (Antiq.) One of two magistrates of Rome who took a
      register of the number and property of citizens, and who
      also exercised the office of inspector of morals and
      conduct.

   2. One who is empowered to examine manuscripts before they
      are committed to the press, and to forbid their
      publication if they contain anything obnoxious; -- an
      official in some European countries.

   3. One given to fault-finding; a censurer.

            Nor can the most circumspect attention, or steady
            rectitude, escape blame from censors who have no
            inclination to approve.               --Rambler.

   4. A critic; a reviewer.

            Received with caution by the censors of the press.
                                                  --W. Irving.

Source : WordNet®

censor
     n : a person who is authorized to read publications or
         correspondence or to watch theatrical performances and
         suppress in whole or in part anything considered obscene
         or politically unacceptable

censor
     v 1: forbid the public distribution of ( a movie or a newspaper)
          [syn: {ban}]
     2: subject to political, religious, or moral censorship; "This
        magazine is censored by the government"