Source : Webster's Revised Unabridged Dictionary (1913)

Circumcision \Cir`cum*cision\, n. [L. circumcisio.]
   1. The act of cutting off the prepuce or foreskin of males,
      or the internal labia of females.

   Note: The circumcision of males is practiced as a religious
         rite by the Jews, Mohammedans, etc.

   2. (Script.)
      (a) The Jews, as a circumcised people.
      (b) Rejection of the sins of the flesh; spiritual
          purification, and acceptance of the Christian faith.

Source : WordNet®

Circumcision
     n 1: (Roman Catholic Church and Anglican Church) feast day
          celebrating the circumcision of Jesus; celebrated on
          January 1st [syn: {Feast of the Circumcision}, {January
          1}]
     2: the act of circumcising performed on males eight days after
        birth as a Jewish and Muslim religious rite
     3: the act of circumcising; surgical removal of the foreskin of
        males