Source : Webster's Revised Unabridged Dictionary (1913)

Parricide \Par"ri*cide\, n. [F., fr. L. parricida; pater father
   + caedere to kill. See {Father}, {Homicide}, and cf.
   {Patricide}.]
   1. Properly, one who murders one's own father; in a wider
      sense, one who murders one's father or mother or any
      ancestor.

   2. [L. parricidium.] The act or crime of murdering one's own
      father or any ancestor.

Source : WordNet®

parricide
     n 1: someone who kills his or her parent
     2: murder of your own parents